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checkInput.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>bootstrap</title>
<link href="css/bootstrap.css" rel="stylesheet" />
<style type="text/css">
</style>
</head>
<body>
<form class="form" role="form">
<div class="form-group">
<input type="text" class="form-control" id="enterMail" placeholder="请输入用户名" />
</div>
<div class="form-group">
<input type="text" class="form-control" id="enterPhone" placeholder="请输入手机号" />
</div>
</form>
<script src="js/jquery.js"></script>
<script src="js/bootstrap.js"></script>
<script src="js/npm.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#enterMail").on('change',{"regExp":/^\d+$/g,"errorMsg":"输入姓名有误！","correctMsg":"姓名输入正确"},checkInput);
function checkInput(event){
var elem = $(event.target);
var elemValue = elem.val();
var label =$("<label class='control-label' for='" + elem.attr("id") + "'></label>");
if(!event.data.regExp.test(elemValue)){
elem.parent().removeClass();
elem.parent().addClass("has-error form-group");
label.html(event.data.errorMsg);
$("label").remove("[for=" + elem.attr("id") +"]");
elem.after(label);
}else {
elem.parent().removeClass();
elem.parent().addClass("has-success form-group");
label.html(event.data.correctMsg);
$("label").remove("[for=" + elem.attr("id") +"]");
elem.after(label);
}
}
});
</script>
</body>
</html>