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什么是JavaScript call()方法

JavaScript call()方法是用来调用一个以另一个对象为第一参数的函数。

示例

你可以尝试运行以下代码来学习如何在JavaScript中实现call()方法 —

<html>
   <head>
      <script>
         var person = {
            Name:"John",
            Department: "Finance",
            fullName: function() {
               return this.Name + " is from " + this.Department + " Department";
            }
         }

         var myObject = {
            Name: "Amit",
            Department: "Marketing",
         }
         x = person.fullName.call(myObject);
         document.write(x);
      </script>
   </head>

   <body>
   </body>
</html>