作为初学者,以前做表单验证都是自己写的,目的是让自己更好的了解代码,加深自己对javascript的理解,但是其实在很久都知道有一个很好用的表单验证插件:jQuery Validate.js,一直都没时间去自己敲了练习一下,今天终于忍不住想试一试这个插件。
1,首先引入必要的js文件
<script src="jquery-2.1.4/jquery.min.js"></script>
<script src="jquery-validation-1.14.0/dist/jquery.validate.min.js"></script>
<script src="jquery-validation-1.14.0/dist/localization/messages_zh.min.js"></script>
<script src="layer-v2.4/layer/layer.js"></script>
2,该插件和许多插件一样,有两种用法:1.将效验规则写到控件中,2.将效验规则写到js代码中,我再此演示的是第二种
HTML代码:
<form class="cmxform" id="signupForm" method="get" action="">
<fieldset>
<legend>验证完整的表单</legend>
<p>
<label for="firstname">名字</label>
<input id="firstname" name="firstname" type="text">
</p>
<p>
<label for="lastname">姓氏</label>
<input id="lastname" name="lastname" type="text">
</p>
<p>
<label for="username">用户名</label>
<input id="username" name="username" type="text">
</p>
<p>
<label for="password">密码</label>
<input id="password" name="password" type="password">
</p>
<p>
<label for="confirm_password">验证密码</label>
<input id="confirm_password" name="confirm_password" type="password">
</p>
<p>
<label for="email">Email</label>
<input id="email" name="email" type="email">
</p>
<p>
<label for="agree">请同意我们的声明</label>
<input type="checkbox" class="checkbox" id="agree" name="agree">
</p>
<p>
<input class="submit" type="submit" value="提交">
</p>
</fieldset>
</form>
Js代码,在显示我用了layer插件,是一款很好的弹窗插件,百度就可以找到
<script>
$.validator.setDefaults({
submitHandler: function () {
alert("提交事件!");
}
});
$().ready(function () {
// 在键盘按下并释放及提交后验证提交表单
$("#signupForm").validate({
rules: {
firstname: "required",
lastname: "required",
username: {
required: true,
minlength: 2
},
password: {
required: true,
minlength: 5
},
confirm_password: {
required: true,
minlength: 5,
equalTo: "#password"
},
email: {
required: true,
email: true
},
agree: "required"
},
messages: {
firstname: "请输入您的名字",
lastname: "请输入您的姓氏",
username: {
required: "请输入用户名",
minlength: "用户名必需由两个字母组成"
},
password: {
required: "请输入密码",
minlength: "密码长度不能小于 5 个字母"
},
confirm_password: {
required: "请输入密码",
minlength: "密码长度不能小于 5 个字母",
equalTo: "两次密码输入不一致"
},
email: "请输入一个正确的邮箱",
agree: "请接受我们的声明"
},
//重写showErrors
showErrors: function (errorMap, errorList) {
var msg = "";
$.each(errorList, function (i, v) {
//msg += (v.message + "\r\n");
//在此处用了layer的方法,显示效果更美观
layer.tips(v.message, v.element, { time: 2000 });
return false;
});
},
/* 失去焦点时不验证 */
onfocusout: false
});
});
</script>
<style>
.error {
color: blue;
}
</style>
看下效果吧,是不是比之前自己写的验证效果好看了许多勒