{"id":1373,"date":"2022-08-10T23:32:52","date_gmt":"2022-08-10T15:32:52","guid":{"rendered":"https:\/\/blog.cauchyschwarz.com\/?p=1373"},"modified":"2022-08-13T00:35:04","modified_gmt":"2022-08-12T16:35:04","slug":"professional-javascript-for-web-developers-3rd-edition","status":"publish","type":"post","link":"https:\/\/blog.cauchyschwarz.com\/?p=1373","title":{"rendered":"Professional JavaScript for Web Developers, 3rd Edition, Part 1"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69f76bfe4a633\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69f76bfe4a633\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#%E7%AC%AC%E4%B8%80%E7%AB%A0_JavaScript%E7%AE%80%E4%BB%8B\" >\u7b2c\u4e00\u7ae0 JavaScript\u7b80\u4ecb<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#ECMAScript\" >ECMAScript<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#DOM\" >DOM<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#%E7%AC%AC%E4%BA%8C%E7%AB%A0_%E5%9C%A8HTML%E4%B8%AD%E4%BD%BF%E7%94%A8JavaScript\" >\u7b2c\u4e8c\u7ae0 \u5728HTML\u4e2d\u4f7f\u7528JavaScript<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#javascript%E4%BB%A3%E7%A0%81%E7%9A%84%E5%B5%8C%E5%85%A5%E6%96%B9%E5%BC%8F\" >javascript\u4ee3\u7801\u7684\u5d4c\u5165\u65b9\u5f0f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#script%E6%A0%87%E7%AD%BE%E7%9A%84%E4%BD%8D%E7%BD%AE\" >script\u6807\u7b7e\u7684\u4f4d\u7f6e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#defer%E5%B1%9E%E6%80%A7\" >defer\u5c5e\u6027<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#async%E5%B1%9E%E6%80%A7\" >async\u5c5e\u6027<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#%E6%96%87%E6%A1%A3%E6%A8%A1%E5%BC%8F\" >\u6587\u6863\u6a21\u5f0f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/blog.cauchyschwarz.com\/?p=1373\/#%E5%85%83%E7%B4%A0\" >&lt;noscript>\u5143\u7d20<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC%E4%B8%80%E7%AB%A0_JavaScript%E7%AE%80%E4%BB%8B\"><\/span>\u7b2c\u4e00\u7ae0 JavaScript\u7b80\u4ecb<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>JavaScript\u5b9e\u73b0\u5305\u62ec\u4e09\u90e8\u5206\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6838\u5fc3\uff0cECMAScript<\/li><li>\u6587\u6863\u5bf9\u8c61\u6a21\u578b\uff0cDOM<\/li><li>\u6d4f\u89c8\u5668\u5bf9\u8c61\u6a21\u578b\uff0cBOM<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ECMAScript\"><\/span>ECMAScript<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>EcmaScript\u7684\u5e38\u89c1\u5bbf\u4e3b\u73af\u5883\uff1a<\/p>\n\n\n\n<p>web\u6d4f\u89c8\u5668\uff0cNode\uff0cAdobe Flash\u3002<\/p>\n\n\n\n<p>ECMA-262\u6807\u51c6\u53ea\u5b9a\u4e49\u4e86\u8bed\u8a00\u7684\u57fa\u7840\uff0c\u8fde\u8f93\u5165\u8f93\u51fa\u90fd\u6ca1\u6709\u5b9a\u4e49\uff0c\u8f93\u5165\u8f93\u51fa\u7531\u5bbf\u4e3b\u73af\u5883\u63d0\u4f9b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DOM\"><\/span>DOM<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>DOM1\u7ea7\u7684\u76ee\u6807\u4e3b\u8981\u662f\u6620\u5c04\u6587\u6863\u7684\u7ed3\u6784\u3002<\/p>\n\n\n\n<p>DOM2\u7ea7\u5f15\u5165\u4e86\u4e0b\u5217\u65b0\u6a21\u5757\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>DOM\u89c6\u56fe(DOM Views)\uff0c\u5b9a\u4e49\u4e86\u8ddf\u8e2a\u4e0d\u540c\u6587\u6863(\u4f8b\u5982\uff0c\u5e94\u7528CSS\u4e4b\u524d\u548c\u4e4b\u540e\u7684\u6587\u6863)\u89c6\u56fe\u7684\u63a5\u53e3\uff1b<\/li><li>DOM\u4e8b\u4ef6(DOM Events)\uff0c\u5b9a\u4e49\u4e86\u4e8b\u4ef6\u548c\u4e8b\u4ef6\u5904\u7406\u7684\u63a5\u53e3\uff1b<\/li><li>DOM\u6837\u5f0f(DOM Style)\uff0c\u5b9a\u4e49\u4e86\u57fa\u4e8eCSS\u4e3a\u5143\u7d20\u5e94\u7528\u6837\u5f0f\u7684\u63a5\u53e3\uff1b<\/li><li>DOM\u904d\u5386\u548c\u8303\u56f4(DOM Traversal and Range)\uff0c\u5b9a\u4e49\u4e86\u904d\u5386\u548c\u64cd\u4f5c\u6587\u6863\u6811\u7684\u63a5\u53e3\uff1b<\/li><\/ul>\n\n\n\n<p>DOM3\u8fdb\u4e00\u6b65\u6269\u5c55\u4e86DOM\uff0c\u5f15\u5165\u4e86\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>DOM Load and Save\uff0c\u4ee5\u7edf\u4e00\u65b9\u5f0f\u52a0\u8f7d\u548c\u4fdd\u5b58\u6587\u6863\u7684\u65b9\u6cd5\uff1b<\/li><li>DOM Validation\uff0c\u9a8c\u8bc1\u6587\u6863\u7684\u65b9\u6cd5\uff1b<\/li><li>\u652f\u6301XML 1.0\u89c4\u8303\uff0c\u6d89\u53caXML Infoset\uff0cXPath\u548cXML Base\u3002<\/li><\/ul>\n\n\n\n<p>\u5176\u4ed6DOM\u6807\u51c6<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>SVG<\/li><li>MathML<\/li><li>SMIL\uff0cSynchronized Multimedia Integration Language\uff0c\u540c\u6b65\u591a\u5a92\u4f53\u96c6\u6210\u8bed\u8a00<\/li><\/ul>\n\n\n\n<p>BOM<\/p>\n\n\n\n<p>\u4ece\u6839\u672c\u4e0a\u8bb2\uff0cBOM\u53ea\u5904\u7406\u6d4f\u89c8\u5668\u7a97\u53e3\u548c\u6846\u67b6\uff0c\u4f46\u4e60\u60ef\u4e0a\u4eba\u4eec\u4e5f\u628a\u9488\u5bf9\u6d4f\u89c8\u5668\u7684\u4e00\u4e9bJavaScript\u6269\u5c55\u7b97\u4f5cDOM\u7684\u4e00\u90e8\u5206\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5f39\u51fa\u65b0\u6d4f\u89c8\u5668\u7a97\u53e3\uff1b<\/li><li>\u79fb\u52a8\u3001\u7f29\u653e\u548c\u5173\u95ed\u6d4f\u89c8\u5668\u7a97\u53e3\uff1b<\/li><li>\u63d0\u4f9b\u6d4f\u89c8\u5668\u8be6\u7ec6\u4fe1\u606f\u7684navigator\u5bf9\u8c61\uff1b<\/li><li>\u63d0\u4f9b\u6d4f\u89c8\u5668\u6240\u52a0\u8f7d\u9875\u9762\u8be6\u7ec6\u4fe1\u606f\u7684location\u5bf9\u8c61\uff1b<\/li><li>\u63d0\u4f9b\u7528\u6237\u663e\u793a\u5668\u5206\u8fa8\u7387\u8be6\u7ec6\u4fe1\u606f\u7684screen\u5bf9\u8c61\uff1b<\/li><li>\u5bf9cookies\u7684\u652f\u6301\uff1b<\/li><li>\u50cfXMLHttpRequest\u548cIE\u7684ActiveXObject\u8fd9\u6837\u7684\u81ea\u5b9a\u4e49\u5bf9\u8c61\u3002<\/li><\/ul>\n\n\n\n<p>BOM\u6ca1\u6709\u6807\u51c6\uff0c\u6bcf\u4e2a\u6d4f\u89c8\u5668\u6709\u81ea\u5df1\u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC%E4%BA%8C%E7%AB%A0_%E5%9C%A8HTML%E4%B8%AD%E4%BD%BF%E7%94%A8JavaScript\"><\/span>\u7b2c\u4e8c\u7ae0 \u5728HTML\u4e2d\u4f7f\u7528JavaScript<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>HTML4.01\u4e3a&lt;script&gt;\u5143\u7d20\u5b9a\u4e49\u76846\u4e2a\u5c5e\u6027\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>async\uff0c\u8868\u793a\u5e94\u8be5\u7acb\u5373\u4e0b\u8f7d\u8be5\u811a\u672c\uff0c\u4f46\u4e0d\u5e94\u59a8\u788d\u9875\u9762\u4e2d\u7684\u5176\u4ed6\u64cd\u4f5c\uff0c\u6bd4\u5982\u4e0b\u8f7d\u5176\u4ed6\u8d44\u6e90\u6216\u7b49\u5f85\u52a0\u8f7d\u5176\u4ed6\u811a\u672c\uff1b\u53ea\u5bf9\u5916\u90e8\u811a\u672c\u6587\u4ef6\u6709\u6548\uff1b<\/li><li>charset\uff0c\u8868\u793a\u901a\u8fc7src\u5c5e\u6027\u6307\u5b9a\u7684\u4ee3\u7801\u7684\u5b57\u7b26\u96c6\u3002\u5927\u591a\u6570\u6d4f\u89c8\u5668\u4f1a\u5ffd\u7565\u5b83\u7684\u503c\u3002<\/li><li>defer\uff0c\u8868\u793a\u811a\u672c\u53ef\u4ee5\u5ef6\u8fdf\u5230\u6587\u6863\u5b8c\u5168\u88ab\u89e3\u6790\u548c\u663e\u793a\u4e4b\u540e\u518d\u6267\u884c\uff0c\u53ea\u5bf9\u5916\u90e8\u811a\u672c\u6587\u4ef6\u6709\u6548\u3002<\/li><li>language\uff0c\u5df2\u5e9f\u5f03\uff0c\u8868\u793a\u7f16\u5199\u4ee3\u7801\u4f7f\u7528\u7684\u811a\u672c\u8bed\u8a00\u3002<\/li><li>src\uff0c\u8868\u793a\u5305\u542b\u8981\u6267\u884c\u4ee3\u7801\u7684\u5916\u90e8\u6587\u4ef6\u3002<\/li><li>type\uff0c\u53ef\u9009\uff0clanguage\u5c5e\u6027\u7684\u66ff\u4ee3\u5c5e\u6027\uff0c\u8003\u8651\u5230\u6700\u5927\u517c\u5bb9\u6027\u5e94\u8be5\u4f7f\u7528&#8221;text\/javascript&#8221;\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u6307\u5b9a\u8fd9\u4e2a\u5c5e\u6027\uff0c\u9ed8\u8ba4\u503c\u4ecd\u7136\u662f&#8221;text\/javascript&#8221;\u3002<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"javascript%E4%BB%A3%E7%A0%81%E7%9A%84%E5%B5%8C%E5%85%A5%E6%96%B9%E5%BC%8F\"><\/span>javascript\u4ee3\u7801\u7684\u5d4c\u5165\u65b9\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u7b2c\u4e00\u79cd\u76f4\u63a5\u5c06\u4ee3\u7801\u5199\u5728&lt;script&gt;\u6807\u7b7e\u5185\uff0c\u6d4f\u89c8\u5668\u662f\u6309\u987a\u5e8f\u89e3\u6790\u6574\u4e2a\u9875\u9762\u5185\u5bb9\u7684\uff0c\u6240\u4ee5\u5728\u89e3\u91ca\u5668\u5bf9&lt;script&gt;\u5143\u7d20\u5185\u90e8\u7684\u6240\u6709\u4ee3\u7801\u6c42\u503c\u5b8c\u6bd5\u4ee5\u524d\uff0c\u4e0d\u4f1a\u52a0\u8f7d\u548c\u663e\u793a\u9875\u9762\u4e2d\u7684\u5176\u4f59\u5185\u5bb9\u3002\u4ee3\u7801\u4e2d\u4e0d\u80fd\u76f4\u63a5\u5305\u542b&lt;\/script&gt;\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff0c\u800c\u5fc5\u987b\u8f6c\u4e49\uff0c\u5199\u6210&lt;\\\/script&gt;\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u79cd\u662f\u901a\u8fc7src\u5c5e\u6027\u5305\u542b\u5916\u90e8javascript\u6587\u4ef6\uff0c\u6b64\u65f6&lt;script&gt;\u6807\u7b7e\u5185\u90e8\u7684\u4ee3\u7801\u5c06\u4f1a\u5ffd\u7565\u3002\u89e3\u6790src\u5c5e\u6027\u5f15\u5165\u7684\u5916\u90e8\u4ee3\u7801\u6587\u4ef6\u65f6\uff0c\u9875\u9762\u7684\u5269\u4f59\u90e8\u5206\u4e5f\u4f1a\u6682\u505c\u5904\u7406\u3002\u5982\u679c\u662fXHTML\u6587\u6863\u4e2d\uff0c\u53ef\u4ee5\u5c06&lt;script&gt;\u6807\u7b7e\u7684\u95ed\u5408\u6807\u7b7e\u7701\u7565\uff0c\u76f4\u63a5\u5199\u4e3a\uff1a&lt;script 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