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, , , , , , , , , , , , , , to , , , , , , , , , , , , , , , , , , , , , , , , , <tfoot>, <th>, <thead>, <tr>, <tt>, <ul>, <var> <BR></div> <BR>支持该事件的javascript对象： <BR>document, image, link, textarea浏览器差异： <BR>Internet Explorer 使用 event.keyCode 取回被按下的字符，而 Netscape/Firefox/Opera 使用 event.which。 <BR>实例：在本例中，用户无法在输入框中键入数字 <BR><div class="codetitle"><span><a style="CURSOR: pointer" data="37383" class="copybut" id="copybut37383" onclick="doCopy('code37383')"><U>复制代码</U></a></span> 代码如下:</div><div class="codebody" id="code37383"> <BR><html> <BR><body> <BR><script type="text/javascript"> <BR>function noNumbers(e) <BR>{ <BR>var keynum <BR>var keychar <BR>var numcheck <BR>if(window.event) // IE <BR>{ <BR>keynum = e.keyCode <BR>} <BR>else if(e.which) // Netscape/Firefox/Opera <BR>{ <BR>keynum = e.which <BR>} <BR>keychar = String.fromCharCode(keynum) <BR>numcheck = /\d/ <BR>return !numcheck.test(keychar) <BR>} <BR></script> <BR><form> <BR><input type="text" onkeydown="return noNumbers(event)" /> 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