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<?php @include("../../inc/header.php"); /* SoftName : EmpireBak Author : wm_chief Copyright: Powered by www.phome.net */ E_D("replace into `phome_ecms_news_data_1` values('609','75','','1','0','0','0','','','<p>&nbsp;<span style=\\\\\"font-family: tahoma, arial, 宋体; font-size: 14px; line-height: 25.2px;\\\\\">如今的这个年代，流行在Web页面上使用了大量的JavaScript，我们需要寻找各种方式来优化它们，使它们更快。我们使用事件委托来让事件监听器更有效率，使用降频技术来限定某些方法的使用次数，使用各种JavaScript加载器来动态加载我们需要的资源，等等。另外一种让页面更高效、更敏捷的方法是动态的添加或移除样式表里的样式，而不需要去查询DOM元素，对每个元素做样式调整。下面我们就来看看如何使用这种技术！</span></p>\r\n<p style=\\\\\"margin: 0px; padding: 5px 0px; font-size: 14px; font-family: tahoma, arial, 宋体; line-height: 25.2px;\\\\\"><strong>捕获样式表</strong></p>\r\n<p style=\\\\\"margin: 0px; padding: 5px 0px; font-size: 14px; font-family: tahoma, arial, 宋体; line-height: 25.2px;\\\\\">你的页面上可能引用了不只一个的样式文件，你可以选择其中的一个。如果你指定了某个，你可以在HTML页面中的LINK 和 STYLE标签上加入ID来进行区别，获取CSSStyleSheet对象，它存放在document.styleSheets对象里。</p>\r\n<div class=\\\\\"jb51code\\\\\" style=\\\\\"margin: 0px; padding: 0px; line-height: 25.2px; font-size: 14px; width: 660px; overflow: hidden; clear: both; font-family: tahoma, arial, 宋体;\\\\\">\r\n<div style=\\\\\"margin: 0px; padding: 0px; line-height: 25.2px;\\\\\">\r\n<div id=\\\\\"highlighter_80177\\\\\" class=\\\\\"syntaxhighlighter js\\\\\" style=\\\\\"padding: 0px; width: 643px; line-height: 25.2px; margin: 1em 0px !important; position: relative !important; overflow: auto !important;\\\\\">\r\n<div class=\\\\\"toolbar\\\\\" style=\\\\\"line-height: 13.2px; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; border: none !important; bottom: auto !important; float: none !important; height: 11px !important; left: auto !important; outline: 0px !important; overflow: visible !important; position: absolute !important; right: 1px !important; top: 1px !important; vertical-align: baseline !important; width: 11px !important; box-sizing: content-box !important; font-family: Consolas, \\\\''Bitstream Vera Sans Mono\\\\'', \\\\''Courier New\\\\'', Courier, monospace !important; min-height: auto !important; z-index: 10 !important; color: white !important; background: rgb(108, 226, 108) !important;\\\\\"><span style=\\\\\"line-height: 21.6px; font-size: 12px;\\\\\"><a href=\\\\\"http://www.jb51.net/article/86588.htm#\\\\\" class=\\\\\"toolbar_item command_help help\\\\\" style=\\\\\"color: rgb(0, 102, 153); text-decoration: none; font-size: 14px; border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin: 0px !important; outline: 0px !important; overflow: visible !important; padding: 1px 0px 0px !important; position: static !important; right: auto !important; text-align: center !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important; display: block !important; background: none !important;\\\\\">?</a></span></div>\r\n<table border=\\\\\"0\\\\\" cellpadding=\\\\\"0\\\\\" cellspacing=\\\\\"0\\\\\" style=\\\\\"border-collapse: collapse; border-spacing: 0px; border-style: solid; border-color: rgb(204, 204, 204); margin-top: 0.54em; text-align: center; width: 2662px; clear: both; border-radius: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; margin-right: 0px !important; margin-bottom: 0px !important; margin-left: 0px !important; outline: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; box-sizing: content-box !important; font-family: Consolas, \\\\''Bitstream Vera Sans Mono\\\\'', \\\\''Courier New\\\\'', Courier, monospace !important; font-size: 1em !important; min-height: auto !important; background: none !important;\\\\\">\r\n <tbody style=\\\\\"border-radius: 0px !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; 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border-style: solid; border-color: rgb(204, 204, 204); margin: 0px !important; border-radius: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, \\\\''Bitstream Vera Sans Mono\\\\'', \\\\''Courier New\\\\'', Courier, monospace !important; font-size: 1em !important; min-height: auto !important; color: rgb(175, 175, 175) !important; background: none !important;\\\\\">\r\n <div class=\\\\\"line number1 index0 alt2\\\\\" style=\\\\\"line-height: 15.4px; margin: 0px !important; padding: 0px 0.5em 0px 1em !important; border-radius: 0px !important; border-width: 0px 3px 0px 0px !important; border-right-style: solid !important; border-right-color: rgb(108, 226, 108) !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important; white-space: pre !important; background-image: none !important; background-attachment: initial !important; background-size: initial !important; background-origin: initial !important; background-clip: initial !important; background-position: initial !important; background-repeat: initial !important;\\\\\">1</div>\r\n <div class=\\\\\"line number2 index1 alt1\\\\\" style=\\\\\"line-height: 15.4px; margin: 0px !important; padding: 0px 0.5em 0px 1em !important; border-radius: 0px !important; border-width: 0px 3px 0px 0px !important; border-right-style: solid !important; border-right-color: rgb(108, 226, 108) !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; outline: 0px !important; overflow: visible !important; positi