{"id":628,"date":"2024-05-30T15:52:56","date_gmt":"2024-05-30T07:52:56","guid":{"rendered":"https:\/\/levin.ink\/?p=628"},"modified":"2024-06-17T23:34:05","modified_gmt":"2024-06-17T15:34:05","slug":"js-3-4-%e8%a1%a8%e5%8d%95-%e6%8e%a7%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/levin.ink\/?p=628","title":{"rendered":"JS &#8211; 3-4 \u8868\u5355 \u63a7\u4ef6"},"content":{"rendered":"<h1>\u8868\u5355\u5c5e\u6027\u548c\u65b9\u6cd5<\/h1>\n<p>\u8868\u5355\uff08form\uff09\u4ee5\u53ca\u4f8b\u5982\u00a0<code>&lt;input&gt;<\/code>\u00a0\u7684\u63a7\u4ef6\uff08control\uff09\u5143\u7d20\u6709\u8bb8\u591a\u7279\u6b8a\u7684\u5c5e\u6027\u548c\u4e8b\u4ef6\u3002<\/p>\n<h2>\u5bfc\u822a\uff1a\u8868\u5355\u548c\u5143\u7d20<\/h2>\n<p>\u6587\u6863\u4e2d\u7684\u8868\u5355\u662f\u7279\u6b8a\u96c6\u5408\u00a0<code>document.forms<\/code>\u00a0\u7684\u6210\u5458\u3002<br \/>\n\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u201c<strong>\u547d\u540d\u7684\u96c6\u5408<\/strong>\u201d\uff1a\u65e2\u662f\u88ab\u547d\u540d\u4e86\u7684\uff0c\u4e5f\u662f\u6709\u5e8f\u7684\u3002\u6211\u4eec\u65e2\u53ef\u4ee5\u4f7f\u7528\u540d\u5b57\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5728\u6587\u6863\u4e2d\u7684\u7f16\u53f7\u6765\u83b7\u53d6\u8868\u5355\u3002<\/p>\n<pre><code class=\"language-js\">document.forms.my; \/\/ name=&quot;my&quot; \u7684\u8868\u5355\ndocument.forms[0]; \/\/ \u6587\u6863\u4e2d\u7684\u7b2c\u4e00\u4e2a\u8868\u5355\n<\/code><\/pre>\n<p>\u5f53\u6211\u4eec\u6709\u4e86\u4e00\u4e2a\u8868\u5355\u65f6\uff0c\u5176\u4e2d\u7684\u4efb\u4f55\u5143\u7d20\u90fd\u53ef\u4ee5\u901a\u8fc7\u547d\u540d\u7684\u96c6\u5408\u00a0<code>form.elements<\/code>\u00a0\u6765\u83b7\u53d6\u5230\u3002<\/p>\n<pre><code class=\"language-html\">&lt;form name=&quot;my&quot;&gt;\n  &lt;input name=&quot;one&quot; value=&quot;1&quot;&gt;\n  &lt;input name=&quot;two&quot; value=&quot;2&quot;&gt;\n&lt;\/form&gt;\n\n&lt;script&gt;\n  \/\/ \u83b7\u53d6\u8868\u5355\n  let form = document.forms.my; \/\/ &lt;form name=&quot;my&quot;&gt; \u5143\u7d20\n\n  \/\/ \u83b7\u53d6\u8868\u5355\u4e2d\u7684\u5143\u7d20\n  let elem = form.elements.one; \/\/ &lt;input name=&quot;one&quot;&gt; \u5143\u7d20\n\n  alert(elem.value); \/\/ 1\n&lt;\/script&gt;\n<\/code><\/pre>\n<p>\u53ef\u80fd\u4f1a\u6709\u591a\u4e2a\u540d\u5b57\u76f8\u540c\u7684\u5143\u7d20\uff0c\u8fd9\u79cd\u60c5\u51b5\u7ecf\u5e38\u5728\u5904\u7406\u5355\u9009\u6309\u94ae\u4e2d\u51fa\u73b0\u3002<br \/>\n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c<code>form.elements[name]<\/code>\u00a0\u5c06\u4f1a\u662f\u4e00\u4e2a<strong>\u96c6\u5408<\/strong>\u3002<br \/>\n\u8fd9\u4e9b\u5bfc\u822a\uff08navigation\uff09\u5c5e\u6027\u5e76\u4e0d\u4f9d\u8d56\u4e8e\u6807\u7b7e\u7684\u7ed3\u6784\u3002\u6240\u6709\u7684\u63a7\u4ef6\u5143\u7d20\uff0c\u65e0\u8bba\u5b83\u4eec\u5728\u8868\u5355\u4e2d\u6709\u591a\u6df1\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7\u00a0<code>form.elements<\/code>\u00a0\u83b7\u53d6\u5230\u3002<\/p>\n<blockquote>\n<p>Fieldset \u4f5c\u4e3a\u201c\u5b50\u8868\u5355\u201d<br \/>\n\u4e00\u4e2a\u8868\u5355\u5185\u4f1a\u6709\u4e00\u4e2a\u6216\u591a\u4e2a\u00a0<code>&lt;fieldset&gt;<\/code>\u00a0\u5143\u7d20\u3002\u5b83\u4eec\u4e5f\u5177\u6709\u00a0<code>elements<\/code>\u00a0\u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u5217\u51fa\u4e86\u00a0<code>&lt;fieldset&gt;<\/code>\u00a0\u4e2d\u7684\u8868\u5355\u63a7\u4ef6\u3002<\/p>\n<\/blockquote>\n<pre><code class=\"language-html\">&lt;body&gt;\n  &lt;form id=&quot;form&quot;&gt;\n    &lt;fieldset name=&quot;userFields&quot;&gt;\n      &lt;legend&gt;info&lt;\/legend&gt;\n      &lt;input name=&quot;login&quot; type=&quot;text&quot;&gt;\n    &lt;\/fieldset&gt;\n  &lt;\/form&gt;\n\n  &lt;script&gt;\n    alert(form.elements.login); \/\/ &lt;input name=&quot;login&quot;&gt;\n\n    let fieldset = form.elements.userFields;\n    alert(fieldset); \/\/ HTMLFieldSetElement\n\n    \/\/ \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u540d\u5b57\u4ece\u8868\u5355\u548c fieldset \u4e2d\u83b7\u53d6 input\n    alert(fieldset.elements.login == form.elements.login); \/\/ true\n  &lt;\/script&gt;\n&lt;\/body&gt;\n<\/code><\/pre>\n<blockquote>\n<p>\u66f4\u7b80\u77ed\u7684\u8868\u793a\u65b9\u5f0f\uff1a<code>form.name<\/code><br \/>\n\u8fd8\u6709\u4e00\u4e2a\u66f4\u7b80\u77ed\u7684\u8868\u793a\u65b9\u5f0f\uff1a\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u00a0<code>form[index\/name]<\/code>\u00a0\u6765\u8bbf\u95ee\u5143\u7d20\u3002<br \/>\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u00a0<code>form.elements.login<\/code>\u00a0\u5199\u6210\u00a0<code>form.login<\/code>\u3002<br \/>\n\u8fd9\u4e5f\u6709\u6548\uff0c\u4f46\u662f\u4f1a\u6709\u4e00\u4e2a\u5c0f\u95ee\u9898\uff1a\u5982\u679c\u6211\u4eec\u8bbf\u95ee\u4e00\u4e2a\u5143\u7d20\uff0c\u7136\u540e\u4fee\u6539\u5b83\u7684\u00a0<code>name<\/code>\uff0c\u4e4b\u540e\u5b83\u4ecd\u7136\u53ef\u4ee5\u88ab\u901a\u8fc7\u65e7\u7684\u00a0<code>name<\/code>\u00a0\u8bbf\u95ee\u5230\uff08\u5f53\u7136\u4e5f\u80fd\u901a\u8fc7\u65b0\u7684\u00a0<code>name<\/code>\u00a0\u8bbf\u95ee\uff09\u3002<\/p>\n<\/blockquote>\n<pre><code class=\"language-html\">&lt;form id=&quot;form&quot;&gt;\n  &lt;input name=&quot;login&quot;&gt;\n&lt;\/form&gt;\n\n&lt;script&gt;\n  alert(form.elements.login == form.login); \/\/ true\uff0c\u4e0e &lt;input&gt; \u76f8\u540c\n\n  form.login.name = &quot;username&quot;; \/\/ \u4fee\u6539 input \u7684 name\n\n  \/\/ form.elements \u66f4\u65b0\u4e86 name\uff1a\n  alert(form.elements.login); \/\/ undefined\n  alert(form.elements.username); \/\/ input\n\n  \/\/ form \u5141\u8bb8\u6211\u4eec\u4f7f\u7528\u4e24\u4e2a\u540d\u5b57\uff1a\u65b0\u7684\u540d\u5b57\u548c\u65e7\u7684\u540d\u5b57\n  alert(form.username == form.login); \/\/ true\n&lt;\/script&gt;\n<\/code><\/pre>\n<blockquote>\n<p>\u8fd9\u901a\u5e38\u6765\u8bf4\u5e76\u4e0d\u662f\u4e00\u4e2a\u95ee\u9898\uff0c\u56e0\u4e3a\u6211\u4eec\u5f88\u5c11\u4fee\u6539\u8868\u5355\u5143\u7d20\u7684\u540d\u5b57\u3002<\/p>\n<\/blockquote>\n<h2>\u53cd\u5411\u5f15\u7528\uff1a element.form<\/h2>\n<p>\u5bf9\u4e8e\u4efb\u4f55\u5143\u7d20\uff0c\u5176\u5bf9\u5e94\u7684\u8868\u5355\u90fd\u53ef\u4ee5\u901a\u8fc7\u00a0<code>element.form<\/code>\u00a0\u8bbf\u95ee\u5230\u3002\u56e0\u6b64\uff0c\u8868\u5355\u5f15\u7528\u4e86\u6240\u6709\u5143\u7d20\uff0c\u5143\u7d20\u4e5f\u5f15\u7528\u4e86\u8868\u5355\u3002<\/p>\n<h2>\u8868\u5355\u5143\u7d20<\/h2>\n<h3>input textarea<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u00a0<code>input.value<\/code>\uff08\u5b57\u7b26\u4e32\uff09\u6216\u00a0<code>input.checked<\/code>\uff08\u5e03\u5c14\u503c\uff09\u6765\u8bbf\u95ee\u590d\u9009\u6846\uff08checkbox\uff09\u548c\u5355\u9009\u6309\u94ae\uff08radio button\uff09\u4e2d\u7684\u00a0<code>value<\/code>\u3002<\/p>\n<blockquote>\n<p>\u4f7f\u7528\u00a0<code>textarea.value<\/code>\u00a0\u800c\u4e0d\u662f\u00a0<code>textarea.innerHTML<\/code><br \/>\n\u8bf7\u6ce8\u610f\uff0c\u5373\u4f7f\u00a0<code>&lt;textarea&gt;...&lt;\/textarea&gt;<\/code>\u00a0\u5c06\u5b83\u4eec\u7684\u00a0<code>value<\/code>\u00a0\u4f5c\u4e3a\u5d4c\u5957\u7684 HTML \u6807\u7b7e\u6765\u4fdd\u5b58\uff0c\u6211\u4eec\u4e5f\u7edd\u4e0d\u5e94\u8be5\u4f7f\u7528\u00a0<code>textarea.innerHTML<\/code>\u00a0\u6765\u8bbf\u95ee\u5b83\u3002<br \/>\n\u5b83\u4ec5\u5b58\u50a8\u6700\u521d\u5728\u9875\u9762\u4e0a\u7684 HTML\uff0c\u800c\u4e0d\u662f\u5b58\u50a8\u7684\u5f53\u524d\u00a0<code>value<\/code>\u3002<\/p>\n<\/blockquote>\n<h3>select option<\/h3>\n<p>\u4e00\u4e2a\u00a0<code>&lt;select&gt;<\/code>\u00a0\u5143\u7d20\u6709 3 \u4e2a\u91cd\u8981\u7684\u5c5e\u6027\uff1a<\/p>\n<ol>\n<li><code>select.options<\/code>\u00a0\u2014\u2014\u00a0<code>&lt;option&gt;<\/code>\u00a0\u7684\u5b50\u5143\u7d20\u7684\u96c6\u5408\uff0c<\/li>\n<li><code>select.value<\/code>\u00a0\u2014\u2014 \u5f53\u524d\u6240\u9009\u62e9\u7684\u00a0<code>&lt;option&gt;<\/code>\u00a0\u7684\u00a0<strong>value<\/strong>\uff0c<\/li>\n<li><code>select.selectedIndex<\/code>\u00a0\u2014\u2014 \u5f53\u524d\u6240\u9009\u62e9\u7684\u00a0<code>&lt;option&gt;<\/code>\u00a0\u7684<strong>\u7f16\u53f7<\/strong>\u3002<br \/>\n\u5b83\u4eec\u63d0\u4f9b\u4e86\u4e09\u79cd\u4e3a\u00a0<code>&lt;select&gt;<\/code>\u00a0\u8bbe\u7f6e\u00a0<code>value<\/code>\u00a0\u7684\u4e0d\u540c\u65b9\u5f0f\uff1a<\/li>\n<li>\u627e\u5230\u5bf9\u5e94\u7684\u00a0<code>&lt;option&gt;<\/code>\u00a0\u5143\u7d20\uff08\u4f8b\u5982\u5728\u00a0<code>select.options<\/code>\u00a0\u4e2d\uff09\uff0c\u5e76\u5c06\u5176\u00a0<code>option.selected<\/code>\u00a0\u8bbe\u7f6e\u4e3a\u00a0<code>true<\/code>\u3002<\/li>\n<li>\u5982\u679c\u6211\u4eec\u77e5\u9053\u65b0\u7684\u503c\uff1a\u5c06\u00a0<code>select.value<\/code>\u00a0\u8bbe\u7f6e\u4e3a\u5bf9\u5e94\u7684\u65b0\u7684\u503c\u3002<\/li>\n<li>\u5982\u679c\u6211\u4eec\u77e5\u9053\u65b0\u7684\u9009\u9879\u7684\u7d22\u5f15\uff1a\u5c06\u00a0<code>select.selectedIndex<\/code>\u00a0\u8bbe\u7f6e\u4e3a\u5bf9\u5e94\u00a0<code>&lt;option&gt;<\/code>\u00a0\u7684\u7f16\u53f7\u3002<br \/>\n\u548c\u5927\u591a\u6570\u5176\u5b83\u63a7\u4ef6\u4e0d\u540c\uff0c\u5982\u679c\u00a0<code>&lt;select&gt;<\/code>\u00a0\u5177\u6709\u00a0<code>multiple<\/code>\u00a0\u7279\u6027\uff08attribute\uff09\uff0c\u5219\u5141\u8bb8\u591a\u9009\u3002\u5c3d\u7ba1\u8fd9\u4e2a\u7279\u6027\uff08attribute\uff09\u5f88\u5c11\u88ab\u7528\u5230\u3002<br \/>\n\u5bf9\u4e8e\u591a\u9009\u7684\u503c\uff0c\u4f7f\u7528\u7b2c\u4e00\u79cd\u8bbe\u7f6e\u503c\u7684\u65b9\u5f0f\uff1a\u5728\u00a0<code>&lt;option&gt;<\/code>\u00a0\u5b50\u5143\u7d20\u4e2d\u6dfb\u52a0\/\u79fb\u9664\u00a0<code>selected<\/code>\u00a0\u5c5e\u6027\u3002<\/li>\n<\/ol>\n<h3>new Option<\/h3>\n<p>\u5728\u00a0<a href=\"https:\/\/html.spec.whatwg.org\/multipage\/forms.html#the-option-element\">\u89c4\u8303<\/a>\u00a0\u4e2d\uff0c\u6709\u4e00\u4e2a\u5f88\u597d\u7684\u7b80\u77ed\u8bed\u6cd5\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u00a0<code>&lt;option&gt;<\/code>\u00a0\u5143\u7d20\uff1a<\/p>\n<pre><code class=\"language-js\">option = new Option(text, value, defaultSelected, selected);\n<\/code><\/pre>\n<p>\u6b64\u8bed\u6cd5\u662f\u53ef\u9009\u7684\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u00a0<code>document.createElement('option')<\/code>\u00a0\u5e76\u624b\u52a8\u8bbe\u7f6e\u7279\u6027\uff08attribute\uff09\u3002\u4e0d\u8fc7\uff0c\u8fd9\u79cd\u8bed\u6cd5\u5199\u8d77\u6765\u53ef\u80fd\u4f1a\u66f4\u77ed\uff0c\u5176\u53c2\u6570\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><code>text<\/code>\u00a0\u2014\u2014\u00a0<code>&lt;option&gt;<\/code>\u00a0\u4e2d\u7684\u6587\u672c\uff0c<\/li>\n<li><code>value<\/code>\u00a0\u2014\u2014\u00a0<code>&lt;option&gt;<\/code>\u00a0\u7684\u00a0<code>value<\/code>\uff0c<\/li>\n<li><code>defaultSelected<\/code>\u00a0\u2014\u2014 \u5982\u679c\u4e3a\u00a0<code>true<\/code>\uff0c\u90a3\u4e48\u00a0<code>selected<\/code>\u00a0HTML-\u7279\u6027\uff08attribute\uff09\u5c31\u4f1a\u88ab\u521b\u5efa\uff0c<\/li>\n<li><code>selected<\/code>\u00a0\u2014\u2014 \u5982\u679c\u4e3a\u00a0<code>true<\/code>\uff0c\u90a3\u4e48\u8fd9\u4e2a\u00a0<code>&lt;option&gt;<\/code>\u00a0\u5c31\u4f1a\u88ab\u9009\u4e2d\u3002<br \/>\n<code>defaultSelected<\/code>\u00a0\u548c\u00a0<code>selected<\/code>\u00a0\u7684\u533a\u522b\u662f\uff0c<code>defaultSelected<\/code>\u00a0\u8bbe\u7f6e\u7684\u662f HTML-\u7279\u6027\uff08attribute\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u00a0<code>option.getAttribute('selected')<\/code>\u00a0\u6765\u83b7\u5f97\u3002\u800c\u00a0<code>selected<\/code>\u00a0\u8bbe\u7f6e\u7684\u662f\u9009\u9879\u662f\u5426\u88ab\u9009\u4e2d\u3002<br \/>\n\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u901a\u5e38\u5e94\u8be5\u5c06<strong>\u540c\u65f6<\/strong>\u5c06\u8fd9\u4e24\u4e2a\u503c\u8bbe\u7f6e\u4e3a\u00a0<code>true<\/code>\u00a0\u6216\u00a0<code>false<\/code>\u3002\uff08\u6216\u8005\uff0c\u76f4\u63a5\u7701\u7565\u5b83\u4eec\uff1b\u4e24\u8005\u90fd\u9ed8\u8ba4\u4e3a\u00a0<code>false<\/code>\u3002\uff09<\/li>\n<\/ul>\n<h1>\u805a\u7126 focus\/blur<\/h1>\n<p>\u5f53\u7528\u6237\u70b9\u51fb\u67d0\u4e2a\u5143\u7d20\u6216\u4f7f\u7528\u952e\u76d8\u4e0a\u7684\u00a0Tab\u00a0\u952e\u9009\u4e2d\u65f6\uff0c\u8be5\u5143\u7d20\u5c06\u4f1a\u83b7\u5f97\u805a\u7126\uff08focus\uff09\u3002\u8fd8\u6709\u4e00\u4e2a HTML \u7279\u6027\uff08attribute\uff09<code>autofocus<\/code>\u00a0\u53ef\u4ee5\u8ba9\u7126\u70b9\u5728\u7f51\u9875\u52a0\u8f7d\u65f6\u9ed8\u8ba4\u843d\u5728\u4e00\u4e2a\u5143\u7d20\u4e0a\uff0c\u6b64\u5916\u8fd8\u6709\u5176\u5b83\u9014\u5f84\u53ef\u4ee5\u83b7\u5f97\u7126\u70b9\u3002<br \/>\n\u805a\u7126\u5230\u4e00\u4e2a\u5143\u7d20\u901a\u5e38\u610f\u5473\u7740\uff1a\u201c\u51c6\u5907\u5728\u6b64\u5904\u63a5\u53d7\u6570\u636e\u201d\uff0c\u6240\u4ee5\uff0c\u8fd9\u6b63\u662f\u6211\u4eec\u53ef\u4ee5\u8fd0\u884c\u4ee3\u7801\u4ee5\u521d\u59cb\u5316\u6240\u9700\u529f\u80fd\u7684\u65f6\u523b\u3002<br \/>\n\u5931\u53bb\u7126\u70b9\u7684\u65f6\u523b\uff08\u201cblur\u201d\uff09\u53ef\u80fd\u66f4\u4e3a\u91cd\u8981\u3002\u5b83\u53ef\u80fd\u53d1\u751f\u5728\u7528\u6237\u70b9\u51fb\u9875\u9762\u7684\u5176\u5b83\u5730\u65b9\uff0c\u6216\u8005\u6309\u4e0b\u00a0Tab\u00a0\u952e\u8df3\u8f6c\u5230\u4e0b\u4e00\u4e2a\u8868\u5355\u5b57\u6bb5\uff0c\u4ea6\u6216\u662f\u5176\u5b83\u9014\u5f84\u7684\u65f6\u5019\u3002<br \/>\n\u5931\u53bb\u7126\u70b9\u901a\u5e38\u610f\u5473\u7740\uff1a\u201c\u6570\u636e\u5df2\u7ecf\u8f93\u5165\u5b8c\u6210\u201d\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u8fd0\u884c\u4ee3\u7801\u6765\u68c0\u67e5\u5b83\uff0c\u751a\u81f3\u53ef\u4ee5\u5c06\u5176\u4fdd\u5b58\u5230\u670d\u52a1\u5668\u4e0a\uff0c\u6216\u8fdb\u884c\u5176\u4ed6\u64cd\u4f5c\u3002<\/p>\n<h2>focus\/blur \u4e8b\u4ef6<\/h2>\n<p>\u5f53\u5143\u7d20\u805a\u7126\u65f6\uff0c\u4f1a\u89e6\u53d1\u00a0<code>focus<\/code>\u00a0\u4e8b\u4ef6\uff0c\u5f53\u5143\u7d20\u5931\u53bb\u7126\u70b9\u65f6\uff0c\u4f1a\u89e6\u53d1\u00a0<code>blur<\/code>\u00a0\u4e8b\u4ef6\u3002<br \/>\n\u8ba9\u6211\u4eec\u4f7f\u7528\u5b83\u4eec\u6765\u6821\u9a8c\u4e00\u4e2a\u00a0<code>input<\/code>\u00a0\u5b57\u6bb5\u3002<br \/>\n\u5728\u4e0b\u9762\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff1a<\/p>\n<ul>\n<li><code>blur<\/code>\u00a0\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u68c0\u67e5\u8fd9\u4e2a\u5b57\u6bb5\u662f\u5426\u8f93\u5165\u4e86\u7535\u5b50\u90ae\u7bb1\uff0c\u5982\u679c\u6ca1\u6709\u8f93\u5165\uff0c\u5219\u663e\u793a\u4e00\u4e2a error\u3002<\/li>\n<li><code>focus<\/code>\u00a0\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u9690\u85cf error \u4fe1\u606f\uff08\u5728\u00a0<code>blur<\/code>\u00a0\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e0a\u4f1a\u88ab\u518d\u68c0\u67e5\u4e00\u904d\uff09<\/li>\n<\/ul>\n<pre><code class=\"language-html\">&lt;style&gt;\n  .invalid { border-color: red; }\n  #error { color: red }\n&lt;\/style&gt;\n\nYour email please: &lt;input type=&quot;email&quot; id=&quot;input&quot;&gt;\n\n&lt;div id=&quot;error&quot;&gt;&lt;\/div&gt;\n\n&lt;script&gt;\ninput.onblur = function() {\n  if (!input.value.includes('@')) { \/\/ not email\n    input.classList.add('invalid');\n    error.innerHTML = 'Please enter a correct email.'\n  }\n};\n\ninput.onfocus = function() {\n  if (this.classList.contains('invalid')) {\n    \/\/ \u79fb\u9664 &quot;error&quot; \u6307\u793a\uff0c\u56e0\u4e3a\u7528\u6237\u60f3\u8981\u91cd\u65b0\u8f93\u5165\u4e00\u4e9b\u5185\u5bb9\n    this.classList.remove('invalid');\n    error.innerHTML = &quot;&quot;;\n  }\n};\n&lt;\/script&gt;\n<\/code><\/pre>\n<h2>focus\/blur \u65b9\u6cd5<\/h2>\n<p><code>elem.focus()<\/code>\u00a0\u548c\u00a0<code>elem.blur()<\/code>\u00a0\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6e\u548c\u79fb\u9664\u5143\u7d20\u4e0a\u7684\u7126\u70b9\u3002<br \/>\n\u8fd9\u6bb5\u4ee3\u7801\u5728\u9664\u4e86\u706b\u72d0\uff08<a href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=53579\">bug<\/a>\uff09\u4e4b\u5916\u7684\u6d4f\u89c8\u5668\u4e0a\u90fd\u53ef\u4ee5\u6b63\u5e38\u5de5\u4f5c\u3002<br \/>\n\u5982\u679c\u6211\u4eec\u5728\u00a0<code>input<\/code>\u00a0\u4e2d\u8f93\u5165\u4e00\u4e9b\u5185\u5bb9\uff0c\u7136\u540e\u5c1d\u8bd5\u4f7f\u7528\u00a0Tab\u00a0\u952e\u6216\u70b9\u51fb\u8fdc\u79bb\u00a0<code>&lt;input&gt;<\/code>\u00a0\u7684\u4f4d\u7f6e\uff0c\u90a3\u4e48\u00a0<code>onblur<\/code>\u00a0\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4f1a\u628a\u7126\u70b9\u91cd\u65b0\u8bbe\u7f6e\u5230\u8fd9\u4e2a\u00a0<code>input<\/code>\u00a0\u5b57\u6bb5\u4e0a\u3002<br \/>\n\u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u65e0\u6cd5\u901a\u8fc7\u5728\u00a0<code>onblur<\/code>\u00a0\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\u8c03\u7528\u00a0<code>event.preventDefault()<\/code>\u00a0\u6765\u201c\u963b\u6b62\u5931\u53bb\u7126\u70b9\u201d\uff0c\u56e0\u4e3a\u00a0<code>onblur<\/code>\u00a0\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u662f\u5728\u5143\u7d20\u5931\u53bb\u7126\u70b9\u00a0<strong>\u4e4b\u540e<\/strong>\u00a0\u8fd0\u884c\u7684\u3002<br \/>\n\u4f46\u5728\u5b9e\u9645\u4e2d\uff0c\u5728\u5b9e\u73b0\u8fd9\u6837\u7684\u529f\u80fd\u4e4b\u524d\u5e94\u8be5\u8ba4\u771f\u8003\u8651\u4e00\u4e0b\uff0c\u56e0\u4e3a\u6211\u4eec\u901a\u5e38\u00a0<strong>\u5e94\u8be5\u5c06\u62a5\u9519\u5c55\u793a\u7ed9\u7528\u6237<\/strong>\uff0c\u4f46\u00a0<strong>\u4e0d\u5e94\u8be5\u963b\u6b62\u7528\u6237\u5728\u586b\u5199\u6211\u4eec\u7684\u8868\u5355\u65f6\u7684\u8fdb\u5ea6<\/strong>\u3002\u7528\u6237\u53ef\u80fd\u4f1a\u60f3\u5148\u586b\u5199\u5176\u4ed6\u8868\u5355\u9879\u3002<\/p>\n<blockquote>\n<p>JavaScript \u5bfc\u81f4\u7684\u7126\u70b9\u4e22\u5931<br \/>\n\u5f88\u591a\u79cd\u539f\u56e0\u53ef\u4ee5\u5bfc\u81f4\u7126\u70b9\u4e22\u5931\u3002<br \/>\n\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u7528\u6237\u70b9\u51fb\u4e86\u5176\u5b83\u4f4d\u7f6e\u3002\u5f53\u7136 JavaScript \u81ea\u8eab\u4e5f\u53ef\u80fd\u5bfc\u81f4\u7126\u70b9\u4e22\u5931\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u4e00\u4e2a\u00a0<code>alert<\/code>\u00a0\u4f1a\u5c06\u7126\u70b9\u79fb\u81f3\u81ea\u8eab\uff0c\u56e0\u6b64\u4f1a\u5bfc\u81f4\u5143\u7d20\u5931\u53bb\u7126\u70b9\uff08\u89e6\u53d1\u00a0<code>blur<\/code>\u00a0\u4e8b\u4ef6\uff09\uff0c\u800c\u5f53\u00a0<code>alert<\/code>\u00a0\u5bf9\u8bdd\u6846\u88ab\u53d6\u6d88\u65f6\uff0c\u7126\u70b9\u53c8\u4f1a\u91cd\u65b0\u56de\u5230\u539f\u5143\u7d20\u4e0a\uff08\u89e6\u53d1\u00a0<code>focus<\/code>\u00a0\u4e8b\u4ef6\uff09\u3002<\/li>\n<li>\u5982\u679c\u4e00\u4e2a\u5143\u7d20\u88ab\u4ece DOM \u4e2d\u79fb\u9664\uff0c\u90a3\u4e48\u4e5f\u4f1a\u5bfc\u81f4\u7126\u70b9\u4e22\u5931\u3002\u5982\u679c\u7a0d\u540e\u5b83\u88ab\u91cd\u65b0\u63d2\u5165\u5230 DOM\uff0c\u7126\u70b9\u4e5f\u4e0d\u4f1a\u56de\u5230\u5b83\u8eab\u4e0a\u3002<br \/>\n\u8fd9\u4e9b\u7279\u6027\u6709\u65f6\u5019\u4f1a\u5bfc\u81f4\u00a0<code>focus\/blur<\/code>\u00a0\u5904\u7406\u7a0b\u5e8f\u53d1\u751f\u5f02\u5e38 \u2014\u2014 \u5728\u4e0d\u9700\u8981\u5b83\u4eec\u65f6\u89e6\u53d1\u3002<br \/>\n\u6700\u597d\u7684\u79d8\u8bc0\u5c31\u662f\u5728\u4f7f\u7528\u8fd9\u4e9b\u4e8b\u4ef6\u65f6\u5c0f\u5fc3\u70b9\u3002\u5982\u679c\u6211\u4eec\u60f3\u8981\u8ddf\u8e2a\u7528\u6237\u5bfc\u81f4\u7684\u7126\u70b9\u4e22\u5931\uff0c\u5219\u5e94\u8be5\u907f\u514d\u81ea\u5df1\u9020\u6210\u7684\u7126\u70b9\u4e22\u5931\u3002<\/li>\n<\/ul>\n<\/blockquote>\n<h2>\u5141\u8bb8\u5728\u4efb\u4f55\u5143\u7d20\u4e0a\u805a\u7126\uff1a tabindex<\/h2>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5f88\u591a\u5143\u7d20\u4e0d\u652f\u6301\u805a\u7126\u3002<br \/>\n\u867d\u7136\u8fd9\u4e2a\u8303\u56f4\u56e0\u6d4f\u89c8\u5668\u800c\u5f02\uff0c\u4f46\u6709\u4e00\u4ef6\u4e8b\u603b\u662f\u6b63\u786e\u7684\uff1a\u7528\u6237\u53ef\u4ee5\u4ea4\u4e92\u7684\u5143\u7d20\uff1a<code>&lt;button&gt;<\/code>\uff0c<code>&lt;input&gt;<\/code>\uff0c<code>&lt;select&gt;<\/code>\uff0c<code>&lt;a&gt;<\/code>\u00a0\u7b49\uff0c\u90fd\u652f\u6301\u00a0<code>focus\/blur<\/code>\u3002<br \/>\n\u53e6\u4e00\u65b9\u9762\uff0c\u4e3a\u4e86\u683c\u5f0f\u5316\u67d0\u4e9b\u4e1c\u897f\u800c\u5b58\u5728\u7684\u5143\u7d20\u50cf\u00a0<code>&lt;div&gt;<\/code>\uff0c<code>&lt;span&gt;<\/code>\u00a0\u548c\u00a0<code>&lt;table&gt;<\/code>\u00a0\u2014\u2014 \u9ed8\u8ba4\u662f\u4e0d\u80fd\u88ab\u805a\u7126\u7684\u3002<code>elem.focus()<\/code>\u00a0\u65b9\u6cd5\u4e0d\u9002\u7528\u4e8e\u5b83\u4eec\uff0c\u5e76\u4e14\u00a0<code>focus\/blur<\/code>\u00a0\u4e8b\u4ef6\u4e5f\u7edd\u4e0d\u4f1a\u88ab\u89e6\u53d1\u3002<br \/>\n\u4f7f\u7528 HTML-\u7279\u6027\uff08attribute\uff09<code>tabindex<\/code>\u00a0\u53ef\u4ee5\u6539\u53d8\u8fd9\u79cd\u60c5\u51b5\u3002<br \/>\n\u4efb\u4f55\u5177\u6709\u00a0<code>tabindex<\/code>\u00a0\u7279\u6027\u7684\u5143\u7d20\uff0c\u90fd\u4f1a\u53d8\u6210\u53ef\u805a\u7126\u7684\u3002\u8be5\u7279\u6027\u7684\u00a0<code>value<\/code>\u00a0\u662f\u5f53\u4f7f\u7528\u00a0Tab\uff08\u6216\u7c7b\u4f3c\u7684\u4e1c\u897f\uff09\u5728\u5143\u7d20\u4e4b\u95f4\u8fdb\u884c\u5207\u6362\u65f6\uff0c\u5143\u7d20\u7684\u987a\u5e8f\u53f7\u3002<br \/>\n\u4e5f\u5c31\u662f\u8bf4\uff1a\u5982\u679c\u6211\u4eec\u6709\u4e24\u4e2a\u5143\u7d20\uff0c\u7b2c\u4e00\u4e2a\u5177\u6709\u00a0<code>tabindex=&quot;1&quot;<\/code>\uff0c\u7b2c\u4e8c\u4e2a\u5177\u6709\u00a0<code>tabindex=&quot;2&quot;<\/code>\uff0c\u7136\u540e\u5f53\u7126\u70b9\u5728\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u65f6\u5019\uff0c\u6309\u4e0b\u00a0Tab\u00a0\u952e\uff0c\u4f1a\u4f7f\u7126\u70b9\u79fb\u52a8\u5230\u7b2c\u4e8c\u4e2a\u5143\u7d20\u8eab\u4e0a\u3002<br \/>\n\u5207\u6362\u987a\u5e8f\u4e3a\uff1a\u4ece\u00a0<code>1<\/code>\u00a0\u5f00\u59cb\u7684\u5177\u6709\u00a0<code>tabindex<\/code>\u00a0\u7684\u5143\u7d20\u6392\u5728\u524d\u9762\uff08\u6309\u00a0<code>tabindex<\/code>\u00a0\u987a\u5e8f\uff09\uff0c\u7136\u540e\u662f\u4e0d\u5177\u6709\u00a0<code>tabindex<\/code>\u00a0\u7684\u5143\u7d20\uff08\u4f8b\u5982\u5e38\u89c4\u7684\u00a0<code>&lt;input&gt;<\/code>\uff09\u3002<br \/>\n\u4e0d\u5177\u6709\u00a0<code>tabindex<\/code>\u00a0\u7684\u5143\u7d20\u6309\u6587\u6863\u6e90\u987a\u5e8f\uff08\u9ed8\u8ba4\u987a\u5e8f\uff09\u5207\u6362\u3002<br \/>\n\u8fd9\u91cc\u6709\u4e24\u4e2a\u7279\u6b8a\u7684\u503c\uff1a<\/p>\n<ul>\n<li><code>tabindex=&quot;0&quot;<\/code>\u00a0\u4f1a\u4f7f\u8be5\u5143\u7d20\u88ab\u4e0e\u90a3\u4e9b\u4e0d\u5177\u6709\u00a0<code>tabindex<\/code>\u00a0\u7684\u5143\u7d20\u653e\u5728\u4e00\u8d77\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u6211\u4eec\u5207\u6362\u5143\u7d20\u65f6\uff0c\u5177\u6709\u00a0<code>tabindex=&quot;0&quot;<\/code>\u00a0\u7684\u5143\u7d20\u5c06\u6392\u5728\u90a3\u4e9b\u5177\u6709\u00a0<code>tabindex \u2265 1<\/code>\u00a0\u7684\u5143\u7d20\u7684\u540e\u9762\u3002<br \/>\n\u901a\u5e38\uff0c\u5b83\u7528\u4e8e\u4f7f\u5143\u7d20\u5177\u6709\u7126\u70b9\uff0c\u4f46\u662f\u4fdd\u7559\u9ed8\u8ba4\u7684\u5207\u6362\u987a\u5e8f\u3002\u4f7f\u5143\u7d20\u6210\u4e3a\u4e0e\u00a0<code>&lt;input&gt;<\/code>\u00a0\u4e00\u6837\u7684\u8868\u5355\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<li><code>tabindex=&quot;-1&quot;<\/code>\u00a0\u53ea\u5141\u8bb8\u4ee5\u7f16\u7a0b\u7684\u65b9\u5f0f\u805a\u7126\u4e8e\u5143\u7d20\u3002Tab\u00a0\u952e\u4f1a\u5ffd\u7565\u8fd9\u6837\u7684\u5143\u7d20\uff0c\u4f46\u662f\u00a0<code>elem.focus()<\/code>\u00a0\u6709\u6548\u3002<\/li>\n<\/ul>\n<h2>focus\/blur \u59d4\u6258<\/h2>\n<p><code>focus<\/code>\u00a0\u548c\u00a0<code>blur<\/code>\u00a0\u4e8b\u4ef6\u4e0d\u4f1a\u5411\u4e0a\u5192\u6ce1\u3002<br \/>\n\u8fd9\u91cc\u6709\u4e24\u4e2a\u89e3\u51b3\u65b9\u6848\u3002<br \/>\n\u65b9\u6848\u4e00\uff0c\u6709\u4e00\u4e2a\u9057\u7559\u4e0b\u6765\u7684\u6709\u8da3\u7684\u7279\u6027\uff08feature\uff09\uff1a<code>focus\/blur<\/code>\u00a0\u4e0d\u4f1a\u5411\u4e0a\u5192\u6ce1\uff0c\u4f46\u4f1a\u5728\u6355\u83b7\u9636\u6bb5\u5411\u4e0b\u4f20\u64ad\u3002<br \/>\n\u65b9\u6848\u4e8c\uff0c\u53ef\u4ee5\u4f7f\u7528\u00a0<code>focusin<\/code>\u00a0\u548c\u00a0<code>focusout<\/code>\u00a0\u4e8b\u4ef6 \u2014\u2014 \u4e0e\u00a0<code>focus\/blur<\/code>\u00a0\u4e8b\u4ef6\u5b8c\u5168\u4e00\u6837\uff0c\u53ea\u662f\u5b83\u4eec\u4f1a\u5192\u6ce1\u3002<br \/>\n\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5fc5\u987b\u4f7f\u7528\u00a0<code>elem.addEventListener<\/code>\u00a0\u6765\u5206\u914d\u5b83\u4eec\uff0c\u800c\u4e0d\u662f\u00a0<code>on&lt;event&gt;<\/code>\u3002<\/p>\n<h1>\u4e8b\u4ef6 change input cut copy paste<\/h1>\n<p>\u8ba9\u6211\u4eec\u4ecb\u7ecd\u4e00\u4e0b\u4f34\u968f\u6570\u636e\u66f4\u65b0\u7684\u5404\u79cd\u4e8b\u4ef6\u3002<\/p>\n<h2>\u4e8b\u4ef6 change<\/h2>\n<p>\u5f53\u5143\u7d20\u66f4\u6539\u5b8c\u6210\u65f6\uff0c\u5c06\u89e6\u53d1\u00a0<code>change<\/code>\u00a0\u4e8b\u4ef6\u3002<br \/>\n\u5bf9\u4e8e\u6587\u672c\u8f93\u5165\u6846\uff0c\u5f53\u5176\u5931\u53bb\u7126\u70b9\u65f6\uff0c\u5c31\u4f1a\u89e6\u53d1\u00a0<code>change<\/code>\u00a0\u4e8b\u4ef6\u3002<br \/>\n\u5bf9\u4e8e\u5176\u5b83\u5143\u7d20\uff1a<code>select<\/code>\uff0c<code>input type=checkbox\/radio<\/code>\uff0c\u4f1a\u5728\u9009\u9879\u66f4\u6539\u540e\u7acb\u5373\u89e6\u53d1\u00a0<code>change<\/code>\u00a0\u4e8b\u4ef6\u3002<\/p>\n<h2>\u4e8b\u4ef6 input<\/h2>\n<p>\u6bcf\u5f53\u7528\u6237\u5bf9\u8f93\u5165\u503c\u8fdb\u884c\u4fee\u6539\u540e\uff0c\u5c31\u4f1a\u89e6\u53d1\u00a0<code>input<\/code>\u00a0\u4e8b\u4ef6\u3002<br \/>\n\u4e0e\u952e\u76d8\u4e8b\u4ef6\u4e0d\u540c\uff0c\u53ea\u8981\u503c\u6539\u53d8\u4e86\uff0c<code>input<\/code>\u00a0\u4e8b\u4ef6\u5c31\u4f1a\u89e6\u53d1\uff0c\u5373\u4f7f\u90a3\u4e9b\u4e0d\u6d89\u53ca\u952e\u76d8\u884c\u4e3a\uff08action\uff09\u7684\u503c\u7684\u66f4\u6539\u4e5f\u662f\u5982\u6b64\uff1a\u4f7f\u7528\u9f20\u6807\u7c98\u8d34\uff0c\u6216\u8005\u4f7f\u7528\u8bed\u97f3\u8bc6\u522b\u6765\u8f93\u5165\u6587\u672c\u3002<br \/>\n\u5982\u679c\u6211\u4eec\u60f3\u8981\u5904\u7406\u5bf9\u00a0<code>&lt;input&gt;<\/code>\u00a0\u7684\u6bcf\u6b21\u66f4\u6539\uff0c\u90a3\u4e48\u6b64\u4e8b\u4ef6\u662f\u6700\u4f73\u9009\u62e9\u3002<br \/>\n\u53e6\u4e00\u65b9\u9762\uff0c<code>input<\/code>\u00a0\u4e8b\u4ef6\u4e0d\u4f1a\u5728\u90a3\u4e9b\u4e0d\u6d89\u53ca\u503c\u66f4\u6539\u7684\u952e\u76d8\u8f93\u5165\u6216\u5176\u4ed6\u884c\u4e3a\u4e0a\u89e6\u53d1\uff0c\u4f8b\u5982\u5728\u8f93\u5165\u65f6\u6309\u65b9\u5411\u952e\u00a0\u21e6\u00a0\u21e8\u3002<\/p>\n<blockquote>\n<p>\u65e0\u6cd5\u963b\u6b62\u00a0<code>oninput<\/code>\u00a0\u4e2d\u7684\u4efb\u4f55\u4e8b\u4ef6<br \/>\n\u5f53\u8f93\u5165\u503c\u66f4\u6539\u540e\uff0c\u5c31\u4f1a\u89e6\u53d1\u00a0<code>input<\/code>\u00a0\u4e8b\u4ef6\u3002<br \/>\n\u6240\u4ee5\uff0c\u6211\u4eec\u65e0\u6cd5\u4f7f\u7528\u00a0<code>event.preventDefault()<\/code>\u00a0\u2014\u2014 \u5df2\u7ecf\u592a\u8fdf\u4e86\uff0c\u4e0d\u4f1a\u8d77\u4efb\u4f55\u4f5c\u7528\u4e86\u3002<\/p>\n<\/blockquote>\n<h2>\u4e8b\u4ef6 cut copy paste<\/h2>\n<p>\u8fd9\u4e9b\u4e8b\u4ef6\u53d1\u751f\u4e8e\u526a\u5207\/\u62f7\u8d1d\/\u7c98\u8d34\u4e00\u4e2a\u503c\u7684\u65f6\u5019\u3002<br \/>\n\u5b83\u4eec\u5c5e\u4e8e\u00a0<a href=\"https:\/\/www.w3.org\/TR\/clipboard-apis\/#clipboard-event-interfaces\">ClipboardEvent<\/a>\u00a0\u7c7b\uff0c\u5e76\u63d0\u4f9b\u4e86\u5bf9\u526a\u5207\/\u62f7\u8d1d\/\u7c98\u8d34\u7684\u6570\u636e\u7684\u8bbf\u95ee\u65b9\u6cd5\u3002<br \/>\n\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u00a0<code>event.preventDefault()<\/code>\u00a0\u6765\u4e2d\u6b62\u884c\u4e3a\uff0c\u7136\u540e\u4ec0\u4e48\u90fd\u4e0d\u4f1a\u88ab\u590d\u5236\/\u7c98\u8d34\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u5728\u526a\u5207\/\u590d\u5236\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\u8c03\u7528\u00a0<code>event.clipboardData.getData(...)<\/code>\u00a0\u53ea\u4f1a\u5f97\u5230\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\u3002\u4ece\u6280\u672f\u4e0a\u8bb2\uff0c\u8fd9\u662f\u56e0\u4e3a\u6b64\u65f6\u6570\u636e\u8fd8\u672a\u5b58\u5165\u526a\u5207\u677f\u3002\u5982\u679c\u6211\u4eec\u4f7f\u7528\u00a0<code>event.preventDefault()<\/code>\uff0c\u5219\u5b83\u6839\u672c\u4e0d\u4f1a\u88ab\u590d\u5236\u3002<br \/>\n\u6240\u4ee5\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\u4f7f\u7528\u00a0<code>document.getSelection()<\/code>\u00a0\u6765\u5f97\u5230\u88ab\u9009\u4e2d\u7684\u6587\u672c\u3002\u4f60\u53ef\u4ee5\u5728\u00a0<a href=\"https:\/\/zh.javascript.info\/selection-range\">\u9009\u62e9\uff08Selection\uff09\u548c\u8303\u56f4\uff08Range\uff09<\/a>\u00a0\u4e2d\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u6587\u672c\u9009\u62e9\uff08document selection\uff09\u7684\u7ec6\u8282\u3002<br \/>\n\u6211\u4eec\u4e0d\u4ec5\u53ef\u4ee5\u590d\u5236\/\u7c98\u8d34\u6587\u672c\uff0c\u4e5f\u53ef\u4ee5\u590d\u5236\/\u7c98\u8d34\u5176\u4ed6\u5404\u79cd\u5185\u5bb9\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u64cd\u4f5c\u7cfb\u7edf\u7684\u6587\u4ef6\u7ba1\u7406\u5668\u4e2d\u590d\u5236\u4e00\u4e2a\u6587\u4ef6\u5e76\u8fdb\u884c\u7c98\u8d34\u3002<br \/>\n\u8fd9\u662f\u56e0\u4e3a\u00a0<code>clipboardData<\/code>\u00a0\u5b9e\u73b0\u4e86\u00a0<code>DataTransfer<\/code>\u00a0\u63a5\u53e3\uff0c\u901a\u5e38\u7528\u4e8e\u62d6\u653e\u548c\u590d\u5236\/\u7c98\u8d34\u3002\u8fd9\u8d85\u51fa\u4e86\u672c\u6587\u6240\u8ba8\u8bba\u7684\u8303\u56f4\uff0c\u4f46\u4f60\u53ef\u4ee5\u5728\u00a0<a href=\"https:\/\/html.spec.whatwg.org\/multipage\/dnd.html#the-datatransfer-interface\">DataTransfer \u89c4\u8303<\/a>\u00a0\u4e2d\u8fdb\u884c\u8be6\u7ec6\u4e86\u89e3\u3002<br \/>\n\u53e6\u5916\uff0c\u8fd8\u6709\u4e00\u4e2a\u53ef\u4ee5\u8bbf\u95ee\u526a\u5207\u677f\u7684\u5f02\u6b65 API\uff1a<code>navigator.clipboard<\/code>\uff0c\u8be6\u89c1\u00a0<a href=\"https:\/\/www.w3.org\/TR\/clipboard-apis\/\">Clipboard API \u548c\u4e8b\u4ef6\u89c4\u8303<\/a>\uff0c<a href=\"https:\/\/caniuse.com\/async-clipboard\">\u706b\u72d0\u6d4f\u89c8\u5668\uff08Firefox\uff09\u5c1a\u672a\u652f\u6301<\/a>\u3002<\/p>\n<h3>\u5b89\u5168\u9650\u5236<\/h3>\n<p>\u526a\u8d34\u677f\u662f\u201c\u5168\u5c40\u201d\u64cd\u4f5c\u7cfb\u7edf\u7ea7\u522b\u7684\u4e1c\u897f\u3002\u7528\u6237\u53ef\u80fd\u4f1a\u5728\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u5207\u6362\uff0c\u590d\u5236\/\u7c98\u8d34\u4e0d\u540c\u7684\u5185\u5bb9\uff0c\u800c\u6d4f\u89c8\u5668\u9875\u9762\u4e0d\u5e94\u8be5\u80fd\u8bbf\u95ee\u8fd9\u4e9b\u5185\u5bb9\u3002<br \/>\n\u56e0\u6b64\uff0c\u5927\u591a\u6570\u6d4f\u89c8\u5668\u4ec5\u5141\u8bb8\u5728\u67d0\u4e9b\u7528\u6237\u64cd\u4f5c\u8303\u56f4\u5185\uff08\u4f8b\u5982\u590d\u5236\/\u7c98\u8d34\u7b49\uff09\u5bf9\u526a\u5207\u677f\u8fdb\u884c\u65e0\u7f1d\u7684\u8bfb\/\u5199\u8bbf\u95ee\u3002<br \/>\n\u9664\u706b\u72d0\uff08Firefox\uff09\u6d4f\u89c8\u5668\u5916\uff0c\u6240\u6709\u6d4f\u89c8\u5668\u90fd\u7981\u6b62\u4f7f\u7528\u00a0<code>dispatchEvent<\/code>\u00a0\u751f\u6210\u201c\u81ea\u5b9a\u4e49\u201d\u526a\u8d34\u677f\u4e8b\u4ef6\uff0c\u5373\u4f7f\u6211\u4eec\u8bbe\u6cd5\u8c03\u5ea6\u6b64\u7c7b\u4e8b\u4ef6\u3002\u89c4\u8303\u4e5f\u660e\u786e\u58f0\u660e\u4e86\uff0c\u5408\u6210\uff08syntetic\uff09\u4e8b\u4ef6\u4e0d\u5f97\u63d0\u4f9b\u5bf9\u526a\u5207\u677f\u7684\u8bbf\u95ee\u6743\u9650\u3002<br \/>\n\u6b64\u5916\uff0c\u5982\u679c\u6709\u4eba\u60f3\u5c06\u00a0<code>event.clipboardData<\/code>\u00a0\u4fdd\u5b58\u5728\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\uff0c\u7136\u540e\u7a0d\u540e\u518d\u8bbf\u95ee\u5b83 \u2014\u2014 \u8fd9\u4e5f\u4e0d\u4f1a\u751f\u6548\u3002<br \/>\n\u91cd\u7533\uff0c<a href=\"https:\/\/www.w3.org\/TR\/clipboard-apis\/#clipboardevent-clipboarddata\">event.clipboardData<\/a>\u00a0\u4ec5\u5728\u7528\u6237\u542f\u52a8\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u7684\u4e0a\u4e0b\u6587\u4e2d\u751f\u6548\u3002<br \/>\n\u53e6\u5916,\u00a0<a href=\"https:\/\/www.w3.org\/TR\/clipboard-apis\/#h-navigator-clipboard\">navigator.clipboard<\/a>\u00a0\u662f\u4e00\u4e2a\u8f83\u65b0\u7684 API\uff0c\u9002\u7528\u4e8e\u4efb\u4f55\u4e0a\u4e0b\u6587\u3002\u5982\u679c\u9700\u8981\uff0c\u5b83\u4f1a\u8bf7\u6c42\u7528\u6237\u7684\u8bb8\u53ef\u3002<\/p>\n<h1>\u8868\u5355\uff1a\u4e8b\u4ef6\u548c\u65b9\u6cd5\u63d0\u4ea4<\/h1>\n<p>\u63d0\u4ea4\u8868\u5355\u65f6\uff0c\u4f1a\u89e6\u53d1\u00a0<code>submit<\/code>\u00a0\u4e8b\u4ef6\uff0c\u5b83\u901a\u5e38\u7528\u4e8e\u5728\u5c06\u8868\u5355\u53d1\u9001\u5230\u670d\u52a1\u5668\u4e4b\u524d\u5bf9\u8868\u5355\u8fdb\u884c\u6821\u9a8c\uff0c\u6216\u8005\u4e2d\u6b62\u63d0\u4ea4\uff0c\u5e76\u4f7f\u7528 JavaScript \u6765\u5904\u7406\u8868\u5355\u3002<br \/>\n<code>form.submit()<\/code>\u00a0\u65b9\u6cd5\u5141\u8bb8\u4ece JavaScript \u542f\u52a8\u8868\u5355\u53d1\u9001\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6b64\u65b9\u6cd5\u52a8\u6001\u5730\u521b\u5efa\u8868\u5355\uff0c\u5e76\u5c06\u5176\u53d1\u9001\u5230\u670d\u52a1\u5668\u3002<\/p>\n<h2>\u4e8b\u4ef6\uff1asubmit<\/h2>\n<p>\u63d0\u4ea4\u8868\u5355\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n<ol>\n<li>\u7b2c\u4e00\u79cd \u2014\u2014 \u70b9\u51fb\u00a0<code>&lt;input type=&quot;submit&quot;&gt;<\/code>\u00a0\u6216\u00a0<code>&lt;input type=&quot;image&quot;&gt;<\/code>\u3002<\/li>\n<li>\u7b2c\u4e8c\u79cd \u2014\u2014 \u5728\u00a0<code>input<\/code>\u00a0\u5b57\u6bb5\u4e2d\u6309\u4e0b\u00a0Enter\u00a0\u952e\u3002<br \/>\n\u8fd9\u4e24\u4e2a\u884c\u4e3a\u90fd\u4f1a\u89e6\u53d1\u8868\u5355\u7684\u00a0<code>submit<\/code>\u00a0\u4e8b\u4ef6\u3002\u5904\u7406\u7a0b\u5e8f\u53ef\u4ee5\u68c0\u67e5\u6570\u636e\uff0c\u5982\u679c\u6709\u9519\u8bef\uff0c\u5c31\u663e\u793a\u51fa\u6765\uff0c\u5e76\u8c03\u7528\u00a0<code>event.preventDefault()<\/code>\uff0c\u8fd9\u6837\u8868\u5355\u5c31\u4e0d\u4f1a\u88ab\u53d1\u9001\u5230\u670d\u52a1\u5668\u4e86\u3002<br \/>\n\u5728\u4e0b\u9762\u7684\u8868\u5355\u4e2d\uff1a<\/li>\n<li>\u5728\u6587\u672c\u5b57\u6bb5\u4e2d\u6309\u4e0b\u00a0Enter\u00a0\u952e\u3002<\/li>\n<li>\u70b9\u51fb\u00a0<code>&lt;input type=&quot;submit&quot;&gt;<\/code>\u3002<br \/>\n\u8fd9\u4e24\u79cd\u884c\u4e3a\u90fd\u4f1a\u663e\u793a\u00a0<code>alert<\/code>\uff0c\u800c\u56e0\u4e3a\u4ee3\u7801\u4e2d\u7684\u00a0<code>return false<\/code>\uff0c\u8868\u5355\u4e0d\u4f1a\u88ab\u53d1\u9001\u5230\u522b\u5904<\/li>\n<\/ol>\n<blockquote>\n<p><code>submit<\/code>\u00a0\u548c\u00a0<code>click<\/code>\u00a0\u7684\u5173\u7cfb<br \/>\n\u5728\u8f93\u5165\u6846\u4e2d\u4f7f\u7528\u00a0Enter\u00a0\u53d1\u9001\u8868\u5355\u65f6\uff0c\u4f1a\u5728\u00a0<code>&lt;input type=&quot;submit&quot;&gt;<\/code>\u00a0\u4e0a\u89e6\u53d1\u4e00\u6b21\u00a0<code>click<\/code>\u00a0\u4e8b\u4ef6\u3002<br \/>\n\u8fd9\u5f88\u6709\u8da3\uff0c\u56e0\u4e3a\u5b9e\u9645\u4e0a\u6839\u672c\u6ca1\u6709\u70b9\u51fb\u3002<\/p>\n<\/blockquote>\n<h2>\u65b9\u6cd5\uff1asubmit<\/h2>\n<p>\u5982\u679c\u8981\u624b\u52a8\u5c06\u8868\u5355\u63d0\u4ea4\u5230\u670d\u52a1\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u8c03\u7528\u00a0<code>form.submit()<\/code>\u3002<br \/>\n\u8fd9\u6837\u5c31\u4e0d\u4f1a\u4ea7\u751f\u00a0<code>submit<\/code>\u00a0\u4e8b\u4ef6\u3002\u8fd9\u91cc\u5047\u8bbe\u5982\u679c\u5f00\u53d1\u4eba\u5458\u8c03\u7528\u00a0<code>form.submit()<\/code>\uff0c\u5c31\u610f\u5473\u7740\u6b64\u811a\u672c\u5df2\u7ecf\u8fdb\u884c\u4e86\u6240\u6709\u76f8\u5173\u5904\u7406\u3002<br \/>\n\u6709\u65f6\u8be5\u65b9\u6cd5\u88ab\u7528\u6765\u624b\u52a8\u521b\u5efa\u548c\u53d1\u9001\u8868\u5355<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8868\u5355\u5c5e\u6027\u548c\u65b9\u6cd5 \u8868\u5355\uff08form\uff09\u4ee5\u53ca\u4f8b\u5982\u00a0&lt;input&gt;\u00a0\u7684\u63a7\u4ef6\uff08control\uff09\u5143\u7d20\u6709\u8bb8\u591a\u7279\u6b8a\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-628","post","type-post","status-publish","format-standard","hentry","category-front-end"],"_links":{"self":[{"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts\/628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=628"}],"version-history":[{"count":2,"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts\/628\/revisions"}],"predecessor-version":[{"id":641,"href":"https:\/\/levin.ink\/index.php?rest_route=\/wp\/v2\/posts\/628\/revisions\/641"}],"wp:attachment":[{"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/levin.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}