selector API level 2
为应对HTML5的到来,对元素的寻找与匹配越显重要。FF与safari率先实现matchesSelector方法,这功能相当于jQuery的is方法。这东西对于事件代理无疑是大有裨益!
<!doctype html> <html> <head> <title>matchesSelector by 司徒正美</title> <meta charset="utf-8"/> <meta content="IE=8" http-equiv="X-UA-Compatible"/> <meta name="keywords" content="matchesSelector by 司徒正美" /> <meta name="description" content="matchesSelector by 司徒正美" /> </head> <body> <div id="foo">matchesSelector!</div> <script type="text/javascript"> //http://dev.w3.org/2006/webapi/selectors-api2/#matchtesting var el = document.getElementById("foo"); var method = el.matchesSelector || el.webkitMatchesSelector || el.mozMatchesSelector if (method && method.call(el,"div")) { alert("此元素匹配给定选择器"); } </script> </body> </html>
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