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Allow text boxes to enter only numbers (compatible with IE Firefox)

Source: Internet
Author: User
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<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">

<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/><!--write Utf-8 is garbled? -

<title> text box can only enter numbers </title>

<script language= "javascript" type= "Text/javascript" >

Note: When using the event, Firefox

function Inputnum (evt) {

Firefox uses Evt.which to get keyboard keys, IE uses window.event.keyCode to get keyboard key values

var ev = Evt.which?evt.which:window.event.keycode;

if (ev>=48&&ev<=57) {

return true;

}else{

return false;

}

}

</script>

<body>

<input type= "text" onkeypress= "return Inputnum (Event);" >

</body>


This article is from the "No Water Fish" blog, please be sure to keep this source http://javaqun.blog.51cto.com/10687700/1704203

Allow text boxes to enter only numbers (compatible with IE Firefox)

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Related Keywords:
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