<html>
<head>
<meta charset="UTF-8">
<title>只能输入0-9</title>
</head>
<body>
<label for="textcheck">请输入您的年龄:</label>
<input type="text" id="textcheck" οnkeypress="digitOnly(event)" οnkeyup="filterChar(this)"/>
</body>
<script type="text/javascript">
function digitOnly(event){
var code=event.keyCode||event.which; //ie||firefox
if(code<48||code>57) {
if (event.preventDefault) {
event.preventDefault();
} else{
event.returnValue=false;
}
}
}
function filterChar(input){
input.value=input.value.replace(/[^0-9]/g,'');z
}
</script>
</html>
请关注谢谢~