AngularJs表单验证源码-原创手记-慕课网

index.html

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>仁平君 终南山下，汉水之滨。仁平君者，独步武林。</title>
        <meta name="viewport" content="width=device-width, user-scalable=no">
        <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
        <link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.6/css/bootstrap.min.css">
        <link rel="stylesheet" href="http://cdn.bootcss.com/font-awesome/4.6.3/css/font-awesome.min.css">
        <link rel="stylesheet/less" type="text/less" href="css/app.less"/>
    </head>
    <body ng-app="myApp" ng-controller="signUpController">
        <div class="wrapper">
            <form id="valiForm" name="signUpForm" ng-submit="submitForm()">
                <h2 class="text-center">Sign Up</h2>
                <div class="form-group">
                    <label>Name :</label><br>
                    <input
                        type="text"
                        name="username"
                        class="form-control"
                        ng-model="userdata.username"
                        ng-minlength="4"
                        ng-maxlength="28"
                        required
                    >
                    <p class="fa fa-check input_result text-success" ng-if="signUpForm.username.$valid"></p>
                    <p class="text-danger" ng-if="signUpForm.username.$error.required  &&
                    signUpForm.username.$touched">用户名不可为空</p>
                    <p class="text-danger" ng-if="(signUpForm.username.$error.minlength 
                    signUpForm.username.$error.maxlength) &&
                    signUpForm.username.$touched">用户名长度应在4-32位之间</p>
                </div>
                <div class="form-group">
                    <label>Password :</label><br>
                    <input
                        type="password"
                        name="password"
                        class="form-control"
                        ng-model="userdata.password"
                        ng-minlength="6"
                        ng-maxlength="28"
                        required
                    >
                    <p class="fa fa-check input_result text-success" ng-if="signUpForm.password.$valid"></p>
                    <p class="text-danger" ng-if="signUpForm.password.$error.required &&
                     signUpForm.password.$touched">密码不可为空</p>
                    <p class="text-danger" ng-if="(signUpForm.password.$error.minlength 
                    signUpForm.password.$error.maxlength) && signUpForm.password.$touched">密码应在6-28位之间</p>
                </div>
                <div class="form-group">
                    <label>Password Again:</label><br>
                    <input
                        type="password"
                        name="password2"
                        class="form-control"
                        ng-model="userdata.password2"
                        compare="userdata.password"
                        required
                    >
                    <p class="fa fa-check input_result text-success" ng-if="signUpForm.password2.$valid"></p>
                    <p class="text-danger" ng-if="signUpForm.password2.$error.compare &&
                    signUpForm.password2.$touched">两次密码输入不一致</p>
                </div>
                <div class="form-group">
                    <button class="btn btn-success">submit</button>
                </div>

            </form>
        </div>
        <script src="http://cdn.bootcss.com/jquery/3.0.0/jquery.min.js"></script>
        <script src="http://cdn.bootcss.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
        <script src="http://cdn.bootcss.com/angular.js/1.5.7/angular.min.js"></script>
        <script src="http://cdn.bootcss.com/less.js/2.7.1/less.min.js"></script>
        <script src= "js/app.js"></script>
    </body>
</html>

app.less

.wrapper {
        max-width:500px;
        height:auto;
        margin:20px auto;
        padding:0 10px;
        .input_result {
            position:relative;
            top:-27px;
            left:95%;
        }
}

3.app.js

angular.module('myApp',[])
    .controller('signUpController',function($scope){
        $scope.userdata = {};
        $scope.submitForm = function(){
            console.log($scope.userdata);
            if($scope.signUpForm.$invalid)
                alert("请检查输入的信息");
            else
                alert("提交成功")
        };
    })

    .directive('compare',function(){
        var o = {};
        o.strict= "AE";
        o.scope = {
            orgText:"=compare"
        }
        o.require = "ngModel";
        o.link = function(sco,ele,att,con){
            con.$validators.compare = function(v){
                return v == sco.orgText;
            }
            sco.$watch("orgText",function(){
                con.$validate();
            });
        }
        return o;
    })

4.预览
图片描述