<!doctype html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
#switcher input{height:26px;width:200px;}
</style>
<script src="./jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#switcher input").keypress(function(event){
if(event.which && (event.which < 48 || event.which >57)){
event.preventDefault();
}
});
});
</script>
</head>
<body>
<div id="switcher">
<input type="text" value="只能输入数字的输入掩码技术" id="txt" maxlength="150" name="txtname" onfocus="this.value=(this.value==‘只能输入数字的输入掩码技术‘) ? ‘‘ : this.value;" onblur="this.value=(this.value==‘‘) ? ‘只能输入数字的输入掩码技术‘ : this.value;"/>
</div>
</body>
</html>
所谓输入掩码技术，即只有数字键起作用,布布扣,bubuko.com
时间： 2024-10-07 05:22:40