js 文本框只能输入整数
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<html><body><script type="text/javascript">function noNumbers(e){var keynumvar keycharvar numcheckif(window.event) // IE { keynum = e.keyCode }else if(e.which) // Netscape/Firefox/Opera { keynum = e.which }keychar = String.fromCharCode(keynum)numcheck = /\d/return numcheck.test(keychar)}</script><form><input type="text" onkeydown="return noNumbers(event)" /></form></html>=====================================================================
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