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jQuery简单前端表单验证
小程序：扫一扫查出行【扫一扫了解最新限行尾号】
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<!DOCTYPE html>
<html>
<head>
<title>表单验证</title>
<script src="../scripts/jquery-1.9.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
$("form :input.required").each(function(){
var $required = $("<strong class='high'>*</strong>");
$(this).parent().append($required);
});
$("input").blur(function(){
var $parent = $(this).parent();
if($(this).is("#username")){
$parent.find(".formtips").remove();
if( this.value==""||this.value.length<6){
var errorMsg = "请输入至少6位的用户名.";
$parent.append('<span class="formtips onError">'+errorMsg+'</span>');
//$(this).after(errorMsg);
}else{
var okMsg = "输入正确.";
$parent.append('<span class="formtips onSuccess">'+okMsg+'</span>');
}
}
});
$("#send").click(function(){
$("form .required:input").trigger("blur");
var numError = $('form .onError').length;
if(numError){ //任何非0的数像1 -1等都被认为是真
return false;
}
alert(numError);
})
});
</script>
</head>
<body>
<form method="post" action="">
<div class="int">
<label for="username">用户名： </label>
<input type="text" id="username" class="required" />
</div>
<div class="int">
<label for="email">邮箱： </label>
<input type="text" id="email" class="required" />
</div>
<div class="int">
<label for="persioninfo">个人资料：</label>
<input type="text" id="persioninfo" class="required" />
</div>
<div class="sub">
<input type="submit" id="send" value="提交"/>
<input type="reset" id="res"/>
</div>
</form>
</body>
</html>
