{"id":257,"date":"2024-05-06T22:15:06","date_gmt":"2024-05-06T14:15:06","guid":{"rendered":"http:\/\/www.cmd137blog.top\/?p=257"},"modified":"2024-05-07T22:12:09","modified_gmt":"2024-05-07T14:12:09","slug":"%e8%87%aa%e9%a1%b6%e5%90%91%e4%b8%8bweb%e5%bc%80%e5%8f%91-1-%e5%89%8d%e7%ab%af%e9%83%a8%e5%88%86-2-javascript","status":"publish","type":"post","link":"http:\/\/www.cmd137blog.top\/?p=257","title":{"rendered":"\u81ea\u9876\u5411\u4e0bWeb\u5f00\u53d1-1 \u524d\u7aef\u90e8\u5206-2 JavaScript"},"content":{"rendered":"\n<ul class=\"wp-block-list\">\n<li>JavaScript\uff08JS\uff09\u662f\u4e00\u95e8\u8de8\u5e73\u53f0\u3001\u9762\u5411\u5bf9\u8c61\u7684\u811a\u672c\u8bed\u8a00\u3002<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">1 \u5f15\u5165\u65b9\u5f0f<\/h1>\n\n\n\n<p>\u5f15\u5165\u65b9\u5f0f\u5373\u6307js\u4ee3\u7801\u4e0ehtml\u9875\u9762\u4ee3\u7801\u7684\u7ed3\u5408\u65b9\u5f0f\u3002\uff082\u79cd\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5185\u90e8\u811a\u672c<\/h3>\n\n\n\n<p>\u5185\u90e8\u811a\u672c\uff1a\u5c06JS\u4ee3\u7801\u5b9a\u4e49\u5728HTML\u9875\u9762\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JS\u4ee3\u7801\u5fc5\u987b\u653e\u5728&lt;script&gt;&lt;\/script&gt;\u6807\u7b7e\u4e4b\u95f4<\/li>\n\n\n\n<li>\u5728HTML\u6587\u6863\u4e2d\uff0c\u53ef\u4ee5\u653e\u5728\u4efb\u610f\u5730\u65b9\uff0c\u653e\u7f6e\u4efb\u610f\u6570\u91cf\u7684&lt;script&gt;<\/li>\n\n\n\n<li>\u4e00\u822c\u628a\u811a\u672c\u7f6e\u4e8e&lt;body&gt;\u5143\u7d20\u7684\u5e95\u90e8\uff0c\u53ef\u6539\u5584\u663e\u793a\u901f\u5ea6<\/li>\n<\/ul>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;script&gt;\n        alert(\"Hello JS!\");\n&lt;\/script&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u5916\u90e8\u811a\u672c<\/h3>\n\n\n\n<p>\u5916\u90e8\u811a\u672c\uff1a\u5c06\u4ee3\u7801\u5b9a\u4e49\u5728\u5916\u90e8JS\u6587\u4ef6\u4e2d\uff0c\u7136\u540e\u5f15\u5165\u5230html\u9875\u9762<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5916\u90e8JS\u6587\u4ef6\u4e2d\uff0c\u53ea\u5305\u542bJS\u4ee3\u7801\uff0c\u4e0d\u5e26&lt;script&gt;\u6807\u7b7e<\/li>\n\n\n\n<li>&lt;script&gt;\u6807\u7b7e\u4e0d\u80fd\u81ea\u95ed\uff08&lt;script&gt;&lt;\/script&gt;\u8981\u90fd\u5199\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;script src=\"xxx\/xxx.js\"&gt;&lt;\/script&gt;<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">2 \u57fa\u7840\u8bed\u6cd5<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">2.1\u57fa\u672c\u4e66\u5199\u8bed\u6cd5<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u533a\u5206\u5927\u5c0f\u5199<\/li>\n\n\n\n<li>\u6bcf\u884c\u7ed3\u5c3e\u5206\u53f7\u53ef\u6709\u53ef\u65e0\uff08\u5efa\u8bae\u5199\uff09<\/li>\n\n\n\n<li>\u6ce8\u91ca\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5355\u884c\u6ce8\u91ca\uff1a\/\/ xxx<\/li>\n\n\n\n<li>\u591a\u884c\u6ce8\u91ca\uff1a\/*  xxx *\/<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5927\u62ec\u53f7\u8868\u793a\u4ee3\u7801\u5757<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2\u8f93\u51fa\u8bed\u53e5<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528<code>window.alert()<\/code>\u5199\u5165\u8b66\u544a\u6846\uff1b<\/li>\n\n\n\n<li>\u4f7f\u7528<code>document.write()<\/code>\u5199\u5165HTML\u8f93\u51fa\uff1b<\/li>\n\n\n\n<li>\u4f7f\u7528<code>console.log()<\/code>\u5199\u5165\u6d4f\u89c8\u5668\u63a7\u5236\u53f0\uff1b<\/li>\n<\/ul>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>window.alert()<\/code><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"676\" height=\"178\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-258\"  sizes=\"auto, (max-width: 676px) 100vw, 676px\" \/><\/div><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>document.write()<\/code><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-10.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"259\" height=\"85\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-10.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-259\"\/><\/div><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>console.log()<\/code><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-11-1024x173.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"173\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-11-1024x173.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-260\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 \u53d8\u91cf<\/h3>\n\n\n\n<p>JS\u662f\u4e00\u95e8\u5f31\u7c7b\u578b\u8bed\u8a00\uff0c<strong>\u53d8\u91cf\u53ef\u4ee5\u5b58\u653e\u4e0d\u540c\u7c7b\u578b\u7684\u503c<\/strong>\uff1b<\/p>\n\n\n\n<p>~\u4f7f\u7528var\u5173\u952e\u5b57\u6765\u58f0\u660e\u53d8\u91cf~ \uff08\u88ab\u5f03\u7528\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 let \u5173\u952e\u5b57\u5b9a\u4e49\u53d8\u91cf\uff0c\u53ea\u5728\u6240\u5728\u4ee3\u7801\u5757\u5185\u6709\u6548\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u58f0\u660e\uff1b<\/li>\n\n\n\n<li>const\u5b9a\u4e49\u53ea\u8bfb\u7684\u5e38\u91cf\uff0c\u4e0d\u80fd\u6539\u53d8\uff1b<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>let a = 10;\na=\"Hello JS!\";<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2.4 \u6570\u636e\u7c7b\u578b<\/h3>\n\n\n\n<p>\u5206\u4e3a  <strong>\u539f\u59cb\u7c7b\u578b<\/strong>   \u548c   <strong>\u5f15\u7528\u7c7b\u578b<\/strong>\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u539f\u59cb\u7c7b\u578b\uff1a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>number\uff1a\u6574\u6570\u3001\u5c0f\u6570\u3001NaN<\/li>\n\n\n\n<li>string\uff1a\u5b57\u7b26\u4e32<\/li>\n\n\n\n<li>boolean\uff1a\u5e03\u5c14\uff0ctrue false<\/li>\n\n\n\n<li>null\uff1a\u5bf9\u8c61\u4e3a\u7a7a<\/li>\n\n\n\n<li>undefined\uff1a\u58f0\u660e\u53d8\u91cf\u672a\u521d\u59cb\u5316\u7684\u9ed8\u8ba4\u503c\uff1b<\/li>\n<\/ul>\n\n\n\n<p>\u4f7f\u7528typeof\u8fd0\u7b97\u7b26\u53ef\u4ee5\u83b7\u53d6\u6570\u636e\u7c7b\u578b\uff1b<\/p>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;script&gt;\n        alert(typeof(3));\/\/number\n        alert(typeof 1.14);\/\/number\n        \n        alert(typeof \"A\");\/\/string\n        alert(typeof 'abcd');\/\/string\n\n        alert(typeof true);\/\/boolean\n\n        alert(typeof null);\/\/object\n\n        let a;\n        alert(typeof a);\/\/undefined\n        alert(a);\/\/undefined\n\n&lt;\/script&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2.5 \u8fd0\u7b97\u7b26<\/h3>\n\n\n\n<p>\u4e0ejava\u57fa\u672c\u4e00\u6837\u3002\u9664\u4e86<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">==\u4e0e===<\/h4>\n\n\n\n<p>==\u4f1a\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\uff0c===\u4e0d\u4f1a\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.6 \u7c7b\u578b\u8f6c\u6362\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b57\u7b26\u4e32\u7c7b\u578b\u8f6c\u6570\u5b57\uff1a<strong>parseInt()<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>parseInt(\"123\");\/\/123\nparseInt(\"12A3\");\/\/12\nparseInt(\"A123\");\/\/NaN<\/code><\/pre>\n\n\n\n<p>\u5c06\u5b57\u7b26\u4e32\u5b57\u9762\u503c\u8f6c\u6570\u5b57\u3002\u5982\u679c\u5b57\u9762\u503c\u4e0d\u662f\u6570\u5b57\uff0c\u5219\u8f6c\u4e3aNaN\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5176\u4ed6\u7c7b\u578b\u8f6c\u4e3aboolean\uff1a\n<ul class=\"wp-block-list\">\n<li>number\uff1a0\u548cNaN\u8f6cfalse\uff0c\u5176\u4ed6\u4e3atrue\uff1b<\/li>\n\n\n\n<li>string\uff1a\u7a7a\u5b57\u7b26\u4e32\u4e3afalse\uff0c\u5176\u4ed6\u4e3atrue\uff1b<\/li>\n\n\n\n<li>Null \u548c undefined\uff1afalse<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.7 \u6d41\u7a0b\u63a7\u5236\uff1a<\/h3>\n\n\n\n<p>\u540c\u4e00\u822c\u8bed\u8a00\u4e00\u6837<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">3 \u51fd\u6570<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9a\u4e49\uff1a<\/h3>\n\n\n\n<p>JS\u51fd\u6570\u901a\u8fc7  function  \u5173\u952e\u5b57\u8fdb\u884c\u5b9a\u4e49\uff1b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u65b9\u5f0f\u4e00\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>function functionname(\u53c2\u65701,\u53c2\u65702...)\n{\n    \/\/...\n}<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u65b9\u5f0f\u4e8c\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>var functionname= function(\u53c2\u65701\uff0c\u53c2\u65702...)\n{\n    \/\/...\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6ce8\u610f\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f31\u7c7b\u578b\u8bed\u8a00\uff1a\u5f62\u53c2\u4e0d\u9700\u8981\u7c7b\u578b\uff1b<\/li>\n\n\n\n<li>\u8fd4\u56de\u503c\u4e5f\u4e0d\u9700\u8981\u7c7b\u578b\uff0c\u76f4\u63a5return\uff1b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u8c03\u7528\uff1a\u51fd\u6570\u540d\u79f0\uff08\u5b9e\u9645\u53c2\u6570\u8868\uff09<\/h3>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        \/\/\u5b9a\u4e49\u4e00\n        function f1(a,b)\n        {\n            return a+b;\n        }\n\n        \/\/\u5b9a\u4e49\u4e8c\n        let f2=function(a,b)\n        {\n            return a+b;\n        }\n\n        \/\/\u8c03\u7528\n        alert(f1(10,20));\n        alert(f2(20,60));<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">4 \u5bf9\u8c61<\/h1>\n\n\n\n<p>JS\u4e2d\u4e3b\u8981\u6709\u4e09\u79cd\u5bf9\u8c61\uff1aJS\u81ea\u8eab\u63d0\u4f9b\u7684<strong>\u57fa\u7840\u5bf9\u8c61<\/strong>\u3001<strong>BOM<\/strong>\uff08\u6d4f\u89c8\u5668\u5bf9\u8c61\u6a21\u578b\uff09\u3001<strong>DOM<\/strong>\uff08\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff09\uff1b<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4.1 Array\u6570\u7ec4\u5bf9\u8c61<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">JS\u4e2dArray\u5bf9\u8c61\u7528\u4e8e\u5b9a\u4e49\u6570\u7ec4\u3002<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9a\u4e49\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65b9\u5f0f\u4e00\uff1a<\/li>\n<\/ul>\n\n\n\n<p>let \u53d8\u91cf\u540d= new Array(\u5143\u7d20\u5217\u8868);<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65b9\u5f0f\u4e8c\uff1a<\/li>\n<\/ul>\n\n\n\n<p>let \u53d8\u91cf\u540d = [\u5143\u7d20\u5217\u8868];\/\/\u6ce8\u610f\u662f\u65b9\u62ec\u53f7\u800c\u975e\u82b1\u62ec\u53f7<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8bbf\u95ee\uff1a<\/h3>\n\n\n\n<p>\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee<\/p>\n\n\n\n<p>arr[\u7d22\u5f15]=\u503c\uff1b<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6ce8\u610f\uff1a<\/h3>\n\n\n\n<p>JS\u4e2d\u6570\u7ec4<strong>\u957f\u5ea6\u53ef\u53d8<\/strong>\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u6570\u7ec4\u540d\u6765\u663e\u793a\u6574\u4e2a\u6570\u7ec4\uff0c\u5982alert\uff08arr\uff09\uff1b<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5c5e\u6027\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>length     :      \u8bbe\u7f6e\u6216\u8fd4\u56de\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>forEach( )  :    \u904d\u5386\u6570\u7ec4\u4e2d\u6bcf\u4e2a<strong>\u6709\u503c\u7684\u5143\u7d20<\/strong>\uff0c\u5e76\u8c03\u7528\u4e00\u6b21\u4f20\u5165\u7684\u51fd\u6570\u3002\uff08\u53ef\u4f7f\u7528  =&gt;  \u7b80\u5316\u51fd\u6570\u5b9a\u4e49\u8bed\u6cd5\u3002(\u53c2\u6570\u8868)=&gt;{\u51fd\u6570\u4f53}\uff09<\/li>\n\n\n\n<li>push\uff08 \uff09\uff1a  \u5c06\u65b0\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\u7684\u672b\u5c3e\uff0c\u5e76\u8fd4\u56de\u65b0\u7684\u957f\u5ea6\u3002<\/li>\n\n\n\n<li>splice\uff08 \uff09\uff1a\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4.2 String \u5bf9\u8c61<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9a\u4e49\uff1a<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>let \u53d8\u91cf\u540d = new String(\"...\");<\/code><\/li>\n\n\n\n<li>let <code>\u53d8\u91cf\u540d<\/code> =&#8221;&#8230;&#8221;; <\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u5c5e\u6027\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>length   \uff1a  \u5b57\u7b26\u4e32\u7684\u957f\u5ea6<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>charAt\uff08 \uff09  \uff1a  \u8fd4\u56de\u5728\u6307\u5b9a\u4f4d\u7f6e\u7684\u5b57\u7b26\uff1b<\/li>\n\n\n\n<li>indexOf\uff08 \uff09\uff1a\u68c0\u7d22\u5b57\u7b26\u4e32\uff0c\u8fd4\u56de\u7d22\u5f15\uff1b<\/li>\n\n\n\n<li>trim( ) \uff1a \u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u8fb9\u7684\u7a7a\u683c\uff1b<\/li>\n\n\n\n<li>substring\uff08\uff09\uff1a\u63d0\u53d6\u5b57\u7b26\u4e32\u4e2d\u4e24\u4e2a\u6307\u5b9a\u7d22\u5f15\u53f7\u4e4b\u95f4\u7684\u5b57\u7b26\uff08\u542b\u5934\u4e0d\u542b\u5c3e\uff09<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4.3 JSON\u5bf9\u8c61<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.3.1\u81ea\u5b9a\u4e49\u5bf9\u8c61<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-13-1024x420.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"420\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-13-1024x420.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-262\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">4.3.2 JSON\u5bf9\u8c61<\/h3>\n\n\n\n<p> \u5168\u79f0JavaScript\u5bf9\u8c61\u6807\u8bb0\u6cd5\u3002<\/p>\n\n\n\n<p>JSON\u662f\u901a\u8fc7JS\u5bf9\u8c61\u6807\u8bb0\u6cd5\u4e66\u5199\u7684<strong>\u6587\u672c<\/strong>\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e00\u79cd\u6587\u672c\/\u6570\u636e\u683c\u5f0f\u3002<\/p>\n\n\n\n<p>\u591a\u7528\u4f5c\u4e3a<strong>\u6570\u636e\u8f7d\u4f53<\/strong>\uff0c\u5728\u7f51\u7edc\u4e2d\u4f20\u8f93\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-14-1024x494.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"494\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-14-1024x494.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-263\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>JSON\u5185\u90fd\u662f\u952e\u503c\u5bf9\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\u8981\u4f7f\u7528\u53cc\u5f15\u53f7\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4.4 BOM <\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6982\u5ff5\uff1a\u6d4f\u89c8\u5668\u5bf9\u8c61\u6a21\u578b\uff0c\u5141\u8bb8JS\u4e0e\u6d4f\u89c8\u5668\u5bf9\u8bdd\uff0cJS\u5c06\u6d4f\u89c8\u5668\u7684\u5404\u4e2a\u7ec4\u6210\u90e8\u5206\u5c01\u88c5\u4e3a\u5bf9\u8c61\u3002<\/li>\n\n\n\n<li>\u7ec4\u6210\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>Window\uff1a\u6d4f\u89c8\u5668\u7a97\u53e3\u5bf9\u8c61<\/strong><\/li>\n\n\n\n<li>Navigator\uff1a\u6d4f\u89c8\u5668\u5bf9\u8c61<\/li>\n\n\n\n<li>Screen\uff1a\u5c4f\u5e55\u5bf9\u8c61<\/li>\n\n\n\n<li>History\uff1a\u5386\u53f2\u8bb0\u5f55\u5bf9\u8c61<\/li>\n\n\n\n<li><strong>Location\uff1a\u5730\u5740\u680f\u5bf9\u8c61<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>\u6b64\u5904\u53ea\u638c\u63e1  Window  \u4e0e  Location  \u4e24\u4e2a\u5bf9\u8c61<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Window<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-15-1024x412.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"412\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-15-1024x412.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-265\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Location<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-16-1024x209.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"209\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-16-1024x209.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-266\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">4.4 DOM<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-17-1024x459.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"459\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-17-1024x459.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-267\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u53f3\u4e0b\u89d2\u7684\u7ed3\u6784\u79f0\u4e3adom\u6811\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-18-1024x463.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"463\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-18-1024x463.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-268\" style=\"width:841px;height:auto\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u5bf9\u5bf9\u8c61\u7684\u64cd\u4f5c\uff08\u5bf9\u5c5e\u6027\u503c\u7684\u66f4\u6539\u3001\u8c03\u7528\u65b9\u6cd5&#8230;\uff09\u76f4\u63a5\u67e5\u8be2\u53c2\u8003\u4e66DOM\u90e8\u5206\u5bf9\u5e94Element\u5143\u7d20\u5bf9\u8c61\u90e8\u5206\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u793a\u4f8b\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;html&gt;\n    &lt;head&gt;\n        &lt;title&gt;\u7f51\u9875\u9876\u90e8\u6807\u7b7e\u9875\u6807\u9898&lt;\/title&gt;\n    &lt;\/head&gt;\n    &lt;body&gt;\n        &lt;span style=\"color: red;\"&gt;666&lt;\/span&gt; &lt;br&gt;\n        \n        &lt;img id=\"img1\" src=\"backimg.jpg\" height=\"540PX\"&gt;&lt;br&gt;\n        \n\n        &lt;div class=\"cls\"&gt;BJFU&lt;\/div&gt; &lt;br&gt;\n        &lt;div class=\"cls\"&gt;123456&lt;\/div&gt; &lt;br&gt;\n\n        &lt;input type=\"checkbox\" name=\"hobby\"&gt;C\n        &lt;input type=\"checkbox\" name=\"hobby\"&gt;C++\n        &lt;input type=\"checkbox\" name=\"hobby\"&gt;JAVA\n    &lt;\/body&gt;\n    &lt;script&gt;\n        let img = document.getElementById(\"img1\");\n        alert(img);\n\n        let divs=document.getElementsByTagName(\"div\");\n        for(let i = 0;i&lt;divs.length;i++)\n        {\n            let t=divs&#91;i];\n            t.innerHTML+='&lt;span style=\"color: red;\"&gt;666&lt;\/span&gt;';\/\/\u6ce8\u610f\u6b64\u5904\u4e3ainnerHTML\u800c\u975einnerText\n        }\n\n        let checkboxs = document.getElementsByName(\"hobby\");\n        for (let i = 0; i&lt; checkboxs.length; i++) {\n          const element = checkboxs&#91;i];\n          element.checked=true;\/\/\u4f7f\u590d\u9009\u6846\u5168\u90e8\u9009\u4e2d\n           \n        }\n\n    &lt;\/script&gt;\n&lt;\/html&gt;<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">5 \u4e8b\u4ef6\u76d1\u542c<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u4ef6\uff1aHTML\u4e8b\u4ef6\u662f\u53d1\u751f\u5728HTML\u5143\u7d20\u4e0a\u7684\u201c\u4e8b\u60c5\u201d\u3002\u6bd4\u5982\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6309\u94ae\u88ab\u70b9\u51fb\uff1b<\/li>\n\n\n\n<li>\u9f20\u6807\u79fb\u52a8\u5230\u5143\u7d20\u4e0a\uff1b<\/li>\n\n\n\n<li>\u6309\u4e0b\u952e\u76d8\u6309\u952e\uff1b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4e8b\u4ef6\u76d1\u542c\uff1aJS\u53ef\u4ee5\u5728\u4e8b\u4ef6\u88ab\u4fa6\u6d4b\u5230\u65f6<strong>\u6267\u884c\u4ee3\u7801<\/strong>\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5.1 \u4e8b\u4ef6\u7ed1\u5b9a<\/h2>\n\n\n\n<p>\u5728JavaScript\u4e2d\uff0c\u901a\u8fc7\u4e8b\u4ef6\u7ed1\u5b9a\u53ef\u4ee5\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u6267\u884c\u76f8\u5e94\u7684\u4ee3\u7801\u3002\u4e8b\u4ef6\u7ed1\u5b9a\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u901a\u8fc7HTML\u6807\u7b7e\u4e2d\u7684\u4e8b\u4ef6\u5c5e\u6027\u8fdb\u884c\u7ed1\u5b9a\uff1a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>    &lt;body&gt;\n        &lt;input type=\"button\" onclick=\"on()\" value=\"\u6309\u94ae1\"&gt;\n    &lt;\/body&gt;\n    \n    &lt;script&gt;\n        function on()\n        {\n            alert(\"\u6309\u94ae\u4e00\u88ab\u70b9\u51fb\u4e86\uff01\");\n        }\n    &lt;\/script&gt;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u901a\u8fc7DOM\u5143\u7d20\u5c5e\u6027\u7ed1\u5b9a\uff1a<\/li>\n<\/ul>\n\n\n\n<p>\u5c06\u51fd\u6570\u540d\u4f20\u9012\u7ed9DOM\u5143\u7d20\u5bf9\u8c61\u7684<code>onclick<\/code>\u5c5e\u6027<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\n    &lt;body&gt;\n        &lt;input type=\"button\" id=\"btn2\" value=\"\u6309\u94ae2\"&gt;\n    &lt;\/body&gt;\n\n    &lt;script&gt;\n        function on()\n        {\n            alert(\"\u6309\u94ae\u88ab\u70b9\u51fb\u4e86\uff01\");\n        }\n        document.getElementById(\"btn2\").onclick=on;\n    &lt;\/script&gt;\n<\/code><\/pre>\n\n\n\n<p>\u6216<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\n    &lt;body&gt;\n        &lt;input type=\"button\" id=\"btn2\" value=\"\u6309\u94ae2\"&gt;\n    &lt;\/body&gt;\n\n    &lt;script&gt;\n        document.getElementById(\"btn2\").onclick=function()\n        {\n            alert(\"\u6309\u94ae\u88ab\u70b9\u51fb\uff01\");\n        }\n    &lt;\/script&gt;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">5.2 \u5e38\u89c1\u4e8b\u4ef6<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-19-1024x463.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"463\" data-original=\"http:\/\/www.cmd137blog.top\/wp-content\/uploads\/2024\/05\/image-19-1024x463.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-269\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">5.3 \u6848\u4f8b\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;html>\n    &lt;head>\n        &lt;title>\u6807\u9898&lt;\/title>\n    &lt;\/head>\n    &lt;body>\n        &lt;img id=\"light\" src=\"lightOff.png\" > &lt;br>\n\n        &lt;input type=\"button\" id=\"btn_on\" value=\"\u70b9\u4eae\">\n        &lt;input type=\"button\" id=\"btn_off\" value=\"\u7184\u706d\">\n        &lt;br>&lt;br>\n\n        &lt;input type=\"text\" id=\"t\" onblur=\"upper()\" onfocus=\"lower()\" value=\"CMD-137\">&lt;br>&lt;br>\n\n        &lt;input type=\"checkbox\" name=\"hobby\" >\u7535\u5f71 \n        &lt;input type=\"checkbox\" name=\"hobby\" >\u65c5\u6e38 \n        &lt;input type=\"checkbox\" name=\"hobby\" >\u6e38\u620f &lt;br>\n        &lt;input type=\"button\" value=\"\u5168\u9009\"  onclick=\"allchoose()\">\n        &lt;input type=\"button\" value=\"\u5168\u4e0d\u9009\" onclick=\"allnotchoose()\">\n\n    &lt;\/body>\n\n    &lt;script>\n        \/\/1.\u5b9e\u73b0\u6309\u94ae\u5f00\u5173\u706f\n       let light=document.getElementById(\"light\");\n       document.getElementById(\"btn_on\").onclick=function()\n       {\n           light.src=\"lightOn.png\";\n       }\n       document.getElementById(\"btn_off\").onclick=function()\n       {\n           light.src=\"lightOff.png\";\n       }\n\n       \/\/2.\u8f93\u5165\u6846\u9f20\u6807\u805a\u7126\u540e\uff0c\u5c55\u793a\u5c0f\u5199\uff1b\u79bb\u7126\u540e\uff0c\u5c55\u793a\u5927\u5199\uff1b\n       function upper()\n       {\n        document.getElementById(\"t\").value=document.getElementById(\"t\").value.toUpperCase();\n    \n       }\n       \n       function lower()\n       {\n        document.getElementById(\"t\").value=document.getElementById(\"t\").value.toLowerCase();\n       }\n\n       \/\/3.\u70b9\u51fb\u201c\u5168\u9009\u201d\u4f7f\u6240\u6709\u590d\u9009\u6846\u88ab\u9009\u4e2d\uff0c\u70b9\u51fb\u201c\u5168\u4e0d\u9009\u201d\u4f7f\u6240\u6709\u590d\u9009\u6846\u4e0d\u9009\u4e2d\u3002\n       let checkboxs=document.getElementsByName(\"hobby\");\n       function allchoose()\n       {\n            for (let i = 0; i &lt; checkboxs.length; i++){\n                let e = checkboxs&#91;i];\n                e.checked=true;\n            }\n       }\n\n       function allnotchoose()\n       {\n            for (let i = 0; i &lt; checkboxs.length; i++) {\n               let e = checkboxs&#91;i];\n                e.checked=false;\n            }\n       }\n\n    &lt;\/script>\n&lt;\/html><\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f\u81ea\u547d\u540d\u51fd\u6570\u65f6\uff0c\u5c3d\u91cf\u4f7f\u7528\u590d\u6742\u540d\u79f0\uff0c\u4e0d\u8981\u8d77\u6613\u4e8e\u5185\u7f6e\u5173\u952e\u5b57\u51b2\u7a81\u7684\u540d\u5b57\uff0c\u6bd4\u5982\u672c\u4f8b\u4e2d\u7684all\uff08\uff09~\u6211debug\u4e86\u534a\u5929&#8230;~<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1 \u5f15\u5165\u65b9\u5f0f \u5f15\u5165\u65b9\u5f0f\u5373\u6307js\u4ee3\u7801\u4e0ehtml\u9875\u9762\u4ee3\u7801\u7684\u7ed3\u5408\u65b9\u5f0f\u3002\uff082\u79cd\uff09 \u5185\u90e8\u811a\u672c \u5185\u90e8\u811a\u672c\uff1a\u5c06JS\u4ee3\u7801\u5b9a\u4e49\u5728 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[43,42],"class_list":["post-257","post","type-post","status-publish","format-standard","hentry","category-javaweblist","tag-js","tag-42"],"_links":{"self":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=257"}],"version-history":[{"count":3,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/257\/revisions"}],"predecessor-version":[{"id":271,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/257\/revisions\/271"}],"wp:attachment":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=257"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}