如何使用angularjs实现表单验证

<!DOCTYPE html>

<html ng-app="myApp">

<head>

    <title>angularjs-validate</title>

    <script type="text/javascript" src="js/angular.min.js"></script>

</head>

<body>

    <form name="form1" id="form1">

    账号：<input type="text" name="username" ng-model="username" required>

    <span style="color:red" ng-show="form1.username.$dirty && form1.username.$invalid">

        <span ng-show="form1.username.$error.required">请输入账号</span>

    </span>

    <br />

    邮箱：<input type="text" name="email" ng-model="email" required>

    <span style="color:red" ng-show="form1.email.$dirty && form1.email.$invalid">

        <span ng-show="form1.email.$error.required">请输入邮箱</span>

    </span>

    <p>

<input type="submit" ng-disabled="form1.username.$dirty && form1.username.$invalid || form1.email.$dirty && form1.email.$invalid">

</p>

    </form>

    <script>

var app = angular.module('myApp', []);

</script>

</body>

</html>

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如何使用angularjs实现表单验证

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