AngularJS angular.bind()用法及代码示例

AngularJS中的angular.isArray()函数用于将当前上下文绑定到函数，但实际上在以后执行。它也可以在部分应用中使用。部分应用程序是当您要创建函数但某些参数已被传递时。

用法:

angular.bind(self, function, args);

参数值：

self:这是指应在其中评估函数的上下文。
function:它是指要绑定的函数。
args:用于在函数调用时预绑定到函数。它是一个可选参数。

范例1：

<html> 
   <head> 
      <title>angular.bind()</title> 
      <script src= 
         "https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js">  
      </script> 
   </head> 
  
   <body ng-app="app" style="text-align:Center"> 
  
      <h1 style="color:green">GeeksforGeeks</h1> 
  
      <h2>angular.bind()</h2> 
  
      <p>Input number to sum with 5:
      <div ng-controller="geek"> 
         <input type="number" ng-model="num" ng-change="Func()" /> 
         <br>Sum = {{Add}} 
      </div> 
  
      <script> 
         var app = angular.module("app", []); 
         app.controller('geek', ['$scope', function ($scope) { 
             $scope.num = 0; 
             $scope.Func = function () { 
                 var add = angular.bind(this, function (a, b) { 
                     return a + b; 
                 }); 
                 $scope.Add = add(5, $scope.num); 
             } 
         }]); 
           
      </script> 
   </body> 
</html>

输出：
输入之前：
bind
输入后：
bind

范例2：

<html> 
   <head> 
      <title>angular.bind()</title> 
      <script src= 
          "https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js">  
      </script> 
   </head> 
  
   <body ng-app="app" style="text-align:Center"> 
  
      <h1 style="color:green">GeeksforGeeks</h1> 
  
      <h2>angular.bind()</h2> 
  
      <div ng-controller="geek"> 
         Input A:  
         <input type="number" ng-model="val1" ng-change="GetResult()" /> 
         <br><br> 
         Input B:  
         <input type="number" ng-model="val2" ng-change="GetResult()" /> 
         <br /><br> 
         {{result}} 
      </div> 
  
      <script> 
         var app = angular.module("app", []); 
         app.controller('geek', ['$scope', function ($scope) { 
             function isEqual(a, b) { 
                 if (a == b) { 
                     return "Inputs are equal." 
                 } 
                 else if (a >= b) { 
                     return "A is greater than B." 
                 } 
                 else if (a <= b) { 
                     return "A is lesser than B." 
                 } 
             } 
             $scope.GetResult = function () { 
                 var result = angular.bind(this, isEqual); 
                 $scope.result = result($scope.val1, $scope.val2); 
             } 
         }]); 
           
      </script> 
   </body> 
</html>

输出：
输入之前：
bind
输入后：
bind

相关用法

注：本文由纯净天空筛选整理自Vishal Chaudhary 2大神的英文原创作品 AngularJS | angular.bind() Function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。