srcmini本文概述
AngularJS提供客户端表单验证。它检查表单和输入字段（输入，文本区域，选择）的状态，并让你通知用户当前状态。
它还保留有关是否已触摸或修改输入字段的信息。
通常使用以下指令来跟踪AngularJS形式的错误：
- $ dirty-指出值已更改。
- $ invalid-指出输入的值无效。
- $ error-指出确切的错误。
AngularJS表单验证示例
<!DOCTYPE html>
<html>
<head>
<title>Angular JS Forms</title>
<script src = "http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
<style>
table, th , td {
border: 1px solid grey;
border-collapse: collapse;
padding: 5px;
}
table tr:nth-child(odd) {
background-color: lightpink;
}
table tr:nth-child(even) {
background-color: lightyellow;
}
</style>
</head>
<body>
<h2>AngularJS Sample Application</h2>
<div ng-app = "mainApp" ng-controller = "studentController">
<form name = "studentForm" novalidate>
<table border = "0">
<tr>
<td>Enter first name:</td>
<td><input name = "firstname" type = "text" ng-model = "firstName" required>
<span style = "color:red" ng-show = "studentForm.firstname.$dirty && studentForm.firstname.$invalid">
<span ng-show = "studentForm.firstname.$error.required">First Name is required.</span>
</span>
</td>
</tr>
<tr>
<td>Enter last name: </td>
<td><input name = "lastname" type = "text" ng-model = "lastName" required>
<span style = "color:red" ng-show = "studentForm.lastname.$dirty && studentForm.lastname.$invalid">
<span ng-show = "studentForm.lastname.$error.required">Last Name is required.</span>
</span>
</td>
</tr>
<tr>
<td>Email: </td><td><input name = "email" type = "email" ng-model = "email" length = "100" required>
<span style = "color:red" ng-show = "studentForm.email.$dirty && studentForm.email.$invalid">
<span ng-show = "studentForm.email.$error.required">Email is required.</span>
<span ng-show = "studentForm.email.$error.email">Invalid email address.</span>
</span>
</td>
</tr>
<tr>
<td>
<button ng-click = "reset()">Reset</button>
</td>
<td>
<button ng-disabled = "studentForm.firstname.$dirty &&
studentForm.firstname.$invalid || studentForm.lastname.$dirty &&
studentForm.lastname.$invalid || studentForm.email.$dirty &&
studentForm.email.$invalid" ng-click="submit()">Submit</button>
</td>
</tr>
</table>
</form>
</div>
<script>
var mainApp = angular.module("mainApp", []);
mainApp.controller('studentController', function($scope) {
$scope.reset = function(){
$scope.firstName = "Sonoo";
$scope.lastName = "Jaiswal";
$scope.email = "sonoojaiswal@srcmini02.com";
}
$scope.reset();
});
</script>
</body>
</html>
评论前必须登录！
注册