<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>用正则表达式控制价格输入</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript">
var record=
{
num:""
}
var checkDecimal=
function(n){
var decimalReg=/^\d{0,8}\.{0,1}(\d{1,2})?$/;
//var decimalReg=/^[-\+]?\d{0,8}\.{0,1}(\d{1,2})?$/;
if(n.value!=""&&
decimalReg.test(n.value)){
record.num=
n.value;
}else{
if(n.value!=""
){
n.value=
record.num;
}
}
}
</script>
</head>
<body>
<h3>实用技巧：用正则表达式控制价格输入</h3>
销售价<input maxlength="10" size="18" type="text" name="price" value="" οnkeyup='checkDecimal(this)'/>
</body>
</html>
转载于:https://www.cnblogs.com/whlives/p/4022740.html
相关资源：数据结构—成绩单生成器
