AngularJs实现表单验证

首先,我们应该知道,表单中,常用的验证操作有:

$dirty 表单有填写记录
$valid 字段内容合法的
$invalid 字段内容是非法的
$pristine 表单没有填写记录
$error 表单验证不通过的错误信息, $error支持的验证有:required/minlength/maxlength/pattern/email/number/date/url等

然后,验证时,需给表单,及需要验证的input,设置name属性;给form及input设置name后,会将form表单信息,默认绑定到$scope作用域中。故,可以使用 formName.inputName.$验证操作

AngularJs实现表单验证

若要实现上图表单验证功能,代码如下:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" href="libs/bootstrap.css" />
<style type="text/css">
.row{
margin-bottom: 10px;
}
.row .col-xs-5{
text-align: center;
}
.suc{
border-color: #3c763d;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
}
.suc:focus{
border-color: #2b542c;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #67b168;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #67b168;
} .err{
border-color: #a94442;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
}
.err:focus{
border-color: #843534;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #ce8483;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #ce8483;
}
</style>
</head> <body ng-app="app" ng-controller="ctrl">
<div class="container" style="width: 40%; margin: 50px auto; padding: 0px;">
<div class="panel panel-primary">
<div class="panel-heading">
<div class="panel-title" style="text-align: center;">
用户注册
</div>
</div> <div class="panel-body">
<form action="" method="get" class="form-horizontal" name="myForm" novalidate>
<div class="row" >
<div class="col-xs-3">
用户名:
</div>
<div class="col-xs-9">
<input type="text" class="form-control" ng-model="user.name" name="name" ng-minlength="4" ng-maxlength="10" required ng-class="{suc:myForm.name.$valid && myForm.name.$dirty,err:myForm.name.$invalid && myForm.name.$dirty}"/>
<p style="color: red; margin: 0px;" ng-show="myForm.name.$invalid && myForm.name.$dirty">
<!--当有填写记录且不合法时,p显示-->
<span ng-show="myForm.name.$error.required">用户名必须填写!!!</span>
<span ng-show="myForm.name.$error.minlength">用户名最少包含4个字符!!!</span>
<span ng-show="myForm.name.$error.maxlength">用户名最多包含10个字符!!!</span>
</p>
</div>
</div> <div class="row">
<div class="col-xs-3">
邮箱:
</div>
<div class="col-xs-9">
<input type="email" class="form-control" ng-model="user.mail" name="mail" required ng-class="{suc:myForm.mail.$valid && myForm.mail.$dirty,err:myForm.mail.$invalid && myForm.mail.$dirty}"/>
<p style="color: red; margin: 0px;" ng-show="myForm.mail.$invalid && myForm.mail.$dirty">
<!--当有填写记录且不合法时,p显示-->
<span ng-show="myForm.mail.$error.required">邮箱必须填写!!!</span>
<span ng-show="myForm.mail.$error.email">邮箱格式不合法!!!</span>
</p>
</div>
</div> <div class="row">
<div class="col-xs-3">
密码:
</div>
<div class="col-xs-9">
<input type="password" class="form-control" ng-model="user.pwd" name="pwd" pattern="^\w{6,18}$" required ng-class="{suc:myForm.pwd.$valid && myForm.pwd.$dirty,err:myForm.pwd.$invalid && myForm.pwd.$dirty}"/>
<p style="color: red; margin: 0px;" ng-show="myForm.pwd.$invalid && myForm.pwd.$dirty">
<!--当有填写记录且不合法时,p显示-->
<span ng-show="myForm.pwd.$error.pattern">密码应为6-18位,且只能为字母、数字、下划线</span>
</p>
</div> </div> <div class="row">
<div class="col-xs-3">
确认密码:
</div>
<div class="col-xs-9">
<input type="password" class="form-control" ng-model="rePwd" name="rePwd" required ng-class="{suc:myForm.rePwd.$dirty&&rePwd==user.pwd,err:myForm.rePwd.$dirty&&rePwd!=user.pwd}"/>
<p style="color: red; margin: 0px;" ng-show="myForm.rePwd.$dirty && rePwd!=user.pwd">
<!--当有填写记录且不合法时,p显示-->
两次密码输入不一致!!!
</p>
</div>
</div> <div class="row">
<div class="col-xs-5">
<input type="submit" value="注册" class="btn btn-success" ng-disabled="myForm.$invalid || rePwd!=user.pwd" />
</div>
<div class="col-xs-5">
<input type="button" value="重置" class="btn btn-warning" ng-click="resets()" />
</div>
</div>
</form>
</div>
</div> </div> </body>
<script src="libs/angular.js"></script> </html>
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