jsp正则表达式的数字校验
最新回答
花开丶终会败
2024-10-23 08:36:45
<head>
<script type="text/javascript">
function test(){
var obj = document.getElementById('test');
if(!isNaN(obj.value)){
return ture;
}else{
alert("您输入的不是数字,请重新输入！");
obj.value="";
}
}
</script>
</head>
<body>
<input type="text" id="test"
onpropertychange="if(/[^0-9\\-]/ig.test(value))value=value.replace(/[0-9^\\-]/ig,'')"
oninput="value=value.replace(/[^0-9\\-]/ig,'')"
style="ime-mode: disabled" >
<input type="button" onclick="test()" value="提交"/>
</body>
</html>
时间曼妙
2024-10-23 13:43:06
<head>
<title></title>
<script type="text/javascript">
function reg()
{
var inp= document.getElementById("sr");
var reg=/^[0-9]+$/;
var result= reg.test(inp.value);
if(!result)
{alert("请输入数字！");
inp.value="";
}
}
</script>
</head>
<body>
<input id="sr" type="text" onchange="reg()" />
</body>
</html>
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