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AngularJS 模型

2022年07月19日29jackei

 1.  AngularJS模型主要就是使用的AngularJS的ng-model指令。

  • ng-model指令可以将输入域的值与 AngularJS 创建的变量绑定。
    <!DOCTYPE html> 
    <html> 
        <head> 
            <meta charset="UTF-8"> 
            <title></title> 
            <script type="text/javascript" src="js/angular.min.js"></script> 
        </head> 
        <body ng-app="myApp"> 
            <div ng-app="myApp" ng-controller="myCtrl"> 
                名字: <input ng-model="name"> 
            </div> 
     
            <script> 
                var app = angular.module('myApp', []); 
                app.controller('myCtrl', function($scope) { 
                    $scope.name = "王甘林"; 
                }); 
            </script> 
        </body> 
    </html>
  • 双向绑定:在修改输入域的值时, AngularJS 属性的值也将修改
    <!DOCTYPE html> 
    <html> 
        <head> 
            <meta charset="UTF-8"> 
            <title></title> 
            <script type="text/javascript" src="js/angular.min.js"></script> 
        </head> 
        <body ng-app="myApp"> 
            <div ng-app="myApp" ng-controller="myCtrl"> 
                名字:<input type="text" ng-model="name" /><br /> 
                <h3>你输入了:{{name}}</h3> 
            </div> 
     
            <script> 
                var app = angular.module('myApp', []); 
                app.controller('myCtrl', function($scope) { 
                    $scope.name = "王甘林"; 
                }); 
            </script> 
             
            <p>修改输入框的值,标题的名字也会相应修改。</p> 
        </body> 
    </html>

  • 验证用户输入:
    <!DOCTYPE html> 
    <html> 
     
        <head> 
            <meta charset="UTF-8"> 
            <title></title> 
            <script type="text/javascript" src="js/angular.min.js"></script> 
        </head> 
     
        <body ng-app=""> 
            <form name="myForm"> 
                Email: 
                <input type="email" name="myAddress" ng-model="text"> 
                <span ng-show="myForm.myAddress.$error.email" >不是一个合法的邮箱地址</span> 
            </form> 
     
            <p>在输入框中输入你的邮箱地址,如果不是一个合法的邮箱地址,会弹出提示信息。</p> 
        </body> 
     
    </html>

  •  应用状态:

    <!DOCTYPE html> 
    <html> 
        <head> 
            <meta charset="UTF-8"> 
            <title></title> 
            <script type="text/javascript" src="js/angular.min.js"></script> 
        </head> 
        <body> 
            <form ng-app="" name="myForm" ng-init="myText = 'test@wgl.com'"> 
                Email: 
                <input type="email" name="myAddress" ng-model="myText" required> 
                <p>编辑邮箱地址,查看状态的改变。</p> 
                <h1>状态</h1> 
                <p>Valid: {{myForm.myAddress.$valid}} (如果输入的邮箱是合法的则为 true)。</p> 
                <p>Dirty: {{myForm.myAddress.$dirty}} (如果值改变则为 true)。</p> 
                <p>Touched: {{myForm.myAddress.$touched}} (如果通过触屏点击则为 true)。</p> 
     
            </form> 
        </body> 
    </html>

  • CSS类:

    <!DOCTYPE html> 
    <html> 
        <head> 
            <meta charset="UTF-8"> 
            <title></title> 
            <script type="text/javascript" src="js/angular.min.js"></script> 
            <style> 
                input.ng-invalid{ 
                    background-color: lightblue; 
                } 
            </style> 
        </head> 
        <body> 
            <form ng-app="" name="myForm"> 
                输入内容:<input name="myAddress" ng-model="text" required> 
            </form> 
             
            <p>编辑文本域,不同状态背景颜色会发送变化。</p> 
            <p>文本域添加了 required 属性,该值是必须的,如果为空则是不合法的。</p> 
        </body> 
    </html>


本文参考链接:https://www.cnblogs.com/wgl1995/p/6256696.html