话不多说,请看实例代码
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<html xmlns= "http://www.w3.org/1999/xhtml" >
<head>
<title></title>
<script type= "text/javascript" >
function validation() {
var val = document.getElementById( "txtNumber" ).value;
var regu = /^[1-9]d*$/;
//var regu = /^([1-9][0-9]*){1,3}$/; 亲测可用
//var regu = /^+?[1-9][0-9]*$/; 亲测可用
if (val != "" ) {
if (!regu.test(val)) {
document.getElementById( "labResult" ).style.color = "red" ;
document.getElementById( "labResult" ).innerHTML = "验证失败!" ;
} else {
document.getElementById( "labResult" ).style.color = "green" ;
document.getElementById( "labResult" ).innerHTML = "验证成功!" ;
}
}
}
</script>
</head>
<body>
<input id= "txtNumber" name= "txtNumber" type= "text" />
<input id= "btnValidation" name= "btnValidation" type= "button" value= "校验" onclick= "validation()" />
验证结果:<label id= "labResult" ></label>
</body>
</html>
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以上就是本文的全部内容,希望本文的内容对大家的学习或者工作能带来一定的帮助,同时也希望多多支持服务器之家!
原文链接:http://www.cnblogs.com/lengzhan/p/6042367.html