{"id":194,"date":"2026-01-26T15:24:00","date_gmt":"2026-01-26T07:24:00","guid":{"rendered":"https:\/\/mitongxue.cn\/?p=194"},"modified":"2026-06-04T15:25:48","modified_gmt":"2026-06-04T07:25:48","slug":"%e9%98%bb%e6%ad%a2%e4%ba%8b%e4%bb%b6%e9%bb%98%e8%ae%a4%e8%a1%8c%e4%b8%ba","status":"publish","type":"post","link":"https:\/\/mitongxue.cn\/index.php\/2026\/01\/26\/%e9%98%bb%e6%ad%a2%e4%ba%8b%e4%bb%b6%e9%bb%98%e8%ae%a4%e8%a1%8c%e4%b8%ba\/","title":{"rendered":"\u963b\u6b62\u4e8b\u4ef6\u9ed8\u8ba4\u884c\u4e3a"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u4ec0\u4e48\u662f\u9ed8\u8ba4\u884c\u4e3a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u8c13\u9ed8\u8ba4\u884c\u4e3a\uff0c\u4e00\u822c\u662f\u6307 <em>HTML<\/em> \u5143\u7d20\u6240\u81ea\u5e26\u7684\u884c\u4e3a\u3002\u4f8b\u5982\u70b9\u51fb\u4e00\u4e2a <em>a<\/em> \u5143\u7d20\u8868\u793a\u7684\u662f\u8df3\u8f6c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;a href=\"https:\/\/www.baidu.com\"&gt;\u767e\u5ea6\u4e00\u4e0b&lt;\/a&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u8bbe\u7f6e\u4e86 <em>a<\/em> \u5143\u7d20\u7684 <em>href<\/em> \u5c5e\u6027\u6307\u5411\u767e\u5ea6\uff0c\u5f53\u7528\u6237\u70b9\u51fb\u8be5 <em>a<\/em> \u5143\u7d20\u65f6\uff0c\u5c31\u4f1a\u8df3\u8f6c\u81f3\u767e\u5ea6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;form action=\"\"&gt;&lt;\/form&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\u6211\u4eec\u4e66\u5199\u4e86\u4e00\u4e2a <em>form<\/em> \u5143\u7d20\uff0c\u8be5\u5143\u7d20\u6709\u4e00\u4e2a <em>action<\/em> \u5c5e\u6027\uff0c\u6307\u7684\u662f\u8868\u5355\u5185\u5bb9\u8981\u63d0\u4ea4\u7684\u5730\u5740\u3002\u800c\u5f53\u7528\u6237\u70b9\u51fb\u8868\u5355\u5143\u7d20\u4e2d\u5d4c\u5957\u7684\u63d0\u4ea4\u6309\u94ae\u65f6\uff0c\u5c31\u4f1a\u8fdb\u884c\u4e00\u4e2a\u9ed8\u8ba4\u7684\u63d0\u4ea4\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e9b\uff0c\u5c31\u662f <em>HTML<\/em> \u5143\u7d20\u4e2d\u7684\u9ed8\u8ba4\u884c\u4e3a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u662f\u6709\u4e9b\u65f6\u5019\uff0c\u6211\u4eec\u662f\u4e0d\u9700\u8981\u8fd9\u4e9b\u9ed8\u8ba4\u884c\u4e3a\u7684\uff0c\u4f8b\u5982\uff0c\u7528\u6237\u5728\u586b\u5199\u4e86\u4e00\u4e2a\u8868\u5355\u540e\uff0c\u63d0\u4ea4\u4fe1\u606f\u65f6\u6211\u4eec\u91c7\u7528 <em>ajax<\/em> \u6765\u5f02\u6b65\u53d1\u9001\u5230\u670d\u52a1\u5668\uff0c\u6b64\u65f6\u5c31\u4e0d\u9700\u8981\u8868\u5355 <em>form<\/em> \u5143\u7d20\u9ed8\u8ba4\u7684\u63d0\u4ea4\u8df3\u8f6c\u8fd9\u4e2a\u884c\u4e3a\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u6b64\u65f6\uff0c\u6211\u4eec\u5c31\u9700\u8981\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\u7684\u65b9\u5f0f\u6c47\u603b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uff081\uff09<em>cancelable<\/em> \u5c5e\u6027<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\u8981\u4ecb\u7ecd\u7684\u662f <em>cancelable<\/em> \u5c5e\u6027\uff0c\u8be5\u5c5e\u6027\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u8868\u793a\u4e8b\u4ef6\u662f\u5426\u53ef\u4ee5\u53d6\u6d88\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u5c5e\u6027\u4e3a\u53ea\u8bfb\u5c5e\u6027\u3002\u8fd4\u56de <em>true<\/em> \u65f6\uff0c\u8868\u793a\u53ef\u4ee5\u53d6\u6d88\u3002\u5426\u5219\uff0c\u8868\u793a\u4e0d\u53ef\u53d6\u6d88\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;a id=\"test\" href=\"https:\/\/www.baidu.com\"&gt;\u767e\u5ea6&lt;\/a&gt;<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>var test = document.getElementById(\"test\");<br>test.onclick = function (event) {<br> &nbsp;test.innerHTML = event.cancelable; \/\/ true<br>}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4e3a <em>a<\/em> \u5143\u7d20\u7ed1\u5b9a\u4e86\u4e00\u4e2a\u70b9\u51fb\u4e8b\u4ef6\uff0c\u70b9\u51fb\u4e4b\u540e\u901a\u8fc7 <em>event<\/em> \u5bf9\u8c61\u7684 <em>cancelable<\/em> \u5c5e\u6027\u6765\u67e5\u770b\u8be5\u5143\u7d20\u7684\u9ed8\u8ba4\u884c\u4e3a\u662f\u5426\u80fd\u963b\u6b62\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u7ec8\u8fd4\u56de\u7684\u662f <em>true<\/em>\uff0c\u8bf4\u660e\u662f\u80fd\u591f\u963b\u6b62\u7684\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uff082\uff09<em>preventDefault<\/em> \u65b9\u6cd5<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>preventDefault<\/em> \u65b9\u6cd5\u662f <em>DOM<\/em> \u4e2d\u6700\u5e38\u89c1\uff0c\u4e5f\u662f\u6700\u6807\u51c6\u7684\u53d6\u6d88\u6d4f\u89c8\u5668\u9ed8\u8ba4\u884c\u4e3a\u7684\u65b9\u5f0f\uff0c\u65e0\u8fd4\u56de\u503c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var test = document.getElementById(\"test\");<br>test.onclick = function(event){<br> &nbsp;event.preventDefault();<br>}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4ecd\u7136\u662f\u901a\u8fc7 <em>event<\/em> \u5bf9\u8c61\u6765\u8c03\u7528\u7684 <em>preventDefault<\/em> \u65b9\u6cd5\uff0c\u4ece\u800c\u963b\u6b62\u4e86 <em>a<\/em> \u5143\u7d20\u7684\u9ed8\u8ba4\u8df3\u8f6c\u884c\u4e3a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uff083\uff09<em>returnValue<\/em> \u5c5e\u6027<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u79cd\u65b9\u5f0f\u4f7f\u7528\u7684\u4eba\u6bd4\u8f83\u5c11\uff0c\u77e5\u9053\u8fd9\u79cd\u65b9\u5f0f\u7684\u4eba\u4e5f\u6bd4\u8f83\u5c11\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148 <em>returnValue<\/em> \u662f\u4e00\u4e2a <em>event<\/em> \u5bf9\u8c61\u4e0a\u9762\u7684\u5c5e\u6027\u3002\u8be5\u5c5e\u6027\u53ef\u8bfb\u53ef\u5199\uff0c\u9ed8\u8ba4\u503c\u662f <em>true<\/em>\uff0c\u5c06\u5176\u8bbe\u7f6e\u4e3a <em>false<\/em> \u5c31\u53ef\u4ee5\u53d6\u6d88\u4e8b\u4ef6\u7684\u9ed8\u8ba4\u884c\u4e3a\uff0c\u4e0e <em>preventDefault<\/em> \u65b9\u6cd5\u7684\u4f5c\u7528\u76f8\u540c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8be5\u5c5e\u6027\u6700\u65e9\u662f\u5728 <em>IE<\/em> \u7684\u4e8b\u4ef6\u5bf9\u8c61\u4e2d\uff0c\u5b9e\u73b0\u4e86\u8fd9\u79cd\u53d6\u6d88\u9ed8\u8ba4\u884c\u4e3a\u7684\u65b9\u5f0f\uff0c\u4f46\u662f\u73b0\u5728\u5927\u591a\u6570\u6d4f\u89c8\u5668\u90fd\u5b9e\u73b0\u4e86\u8be5\u65b9\u5f0f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var test = document.getElementById(\"test\");<br>test.onclick = function(event){<br> &nbsp;event.returnValue = false;<br>}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uff084\uff09<em>return false<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>return false<\/em> \u662f\u4e00\u6761\u8bed\u53e5\uff0c\u8be5\u8bed\u53e5\u5199\u5728\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u4e2d\u4e5f\u53ef\u4ee5\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u662f\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u8be5\u6761\u8bed\u53e5\u5199\u5728 <em>jQuery<\/em> \u4ee3\u7801\u4e2d\uff0c\u80fd\u591f\u540c\u65f6\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\u548c\u963b\u6b62\u5192\u6ce1\uff0c\u4f46\u662f\u5728\u539f\u751f <em>JavaScript<\/em> \u4e2d\u53ea\u80fd\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var test = document.getElementById(\"test\");<br>test.onclick = function(){<br> &nbsp;return false;<br>}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uff085\uff09<em>defaultPrevented<\/em> \u65b9\u6cd5<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>defaultPrevented<\/em> \u5c5e\u6027\u4e5f\u662f <em>event<\/em> \u5bf9\u8c61\u4e0a\u9762\u7684\u4e00\u4e2a\u5c5e\u6027\u3002\u8be5\u5c5e\u6027\u8868\u793a\u9ed8\u8ba4\u884c\u4e3a\u662f\u5426\u88ab\u963b\u6b62\uff0c\u8fd4\u56de <em>true<\/em> \u8868\u793a\u88ab\u963b\u6b62\uff0c\u8fd4\u56de <em>false<\/em> \u8868\u793a\u672a\u88ab\u963b\u6b62\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var test = document.getElementById(\"test\");<br>test.onclick = function (event) {<br> &nbsp;\/\/ \u91c7\u7528\u4e24\u79cd\u4e0d\u540c\u7684\u65b9\u5f0f\u6765\u963b\u6b62\u6d4f\u89c8\u5668\u9ed8\u8ba4\u884c\u4e3a\uff0c\u8fd9\u662f\u4e3a\u4e86\u7167\u987e\u5176\u517c\u5bb9\u6027<br> &nbsp;if (event.preventDefault) {<br> &nbsp; &nbsp;event.preventDefault();<br>  } else {<br> &nbsp; &nbsp;event.returnValue = false;<br>  }<br> &nbsp;\/\/ \u5c06\u662f\u5426\u963b\u6b62\u9ed8\u8ba4\u884c\u4e3a\u7684\u7ed3\u679c\u8d4b\u503c\u7ed9 &lt;a&gt; \u6807\u7b7e\u7684\u6587\u672c\u5185\u5bb9<br> &nbsp;test.innerHTML = event.defaultPrevented;<br>}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u70b9\u51fb <em>a<\/em> \u5143\u7d20\u65f6\uff0c\u4f7f\u7528 <em>preventDefault<\/em> \u65b9\u6cd5\u963b\u6b62\u4e86\u6d4f\u89c8\u5668\u9ed8\u8ba4\u884c\u4e3a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e4b\u540e\u8bbf\u95ee <em>event.defaultPrevented<\/em> \u5c5e\u6027\u4f1a\u5f97\u5230 <em>true<\/em>\uff0c\u8bf4\u660e\u9ed8\u8ba4\u884c\u4e3a\u5df2\u7ecf\u88ab\u963b\u6b62\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662f\u9ed8\u8ba4\u884c\u4e3a \u6240\u8c13\u9ed8\u8ba4\u884c\u4e3a\uff0c\u4e00\u822c\u662f\u6307 HTML ..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,11,1],"tags":[],"class_list":["post-194","post","type-post","status-publish","format-standard","hentry","category-js","category-front","category-uncategorized"],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"author_info":{"info":["\u9648 \u67d0\u4eba"]},"category_info":"<a href=\"https:\/\/mitongxue.cn\/index.php\/category\/front\/js\/\" rel=\"category tag\">JS<\/a> <a href=\"https:\/\/mitongxue.cn\/index.php\/category\/front\/\" rel=\"category tag\">\u524d\u7aef<\/a> <a href=\"https:\/\/mitongxue.cn\/index.php\/category\/uncategorized\/\" rel=\"category tag\">\u672a\u5206\u7c7b<\/a>","tag_info":"\u672a\u5206\u7c7b","comment_count":"0","_links":{"self":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/comments?post=194"}],"version-history":[{"count":2,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/194\/revisions"}],"predecessor-version":[{"id":208,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/194\/revisions\/208"}],"wp:attachment":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/media?parent=194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/categories?post=194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/tags?post=194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}