JavaScript call()方法用于以另一个对象作为第一个参数的函数。
您可以尝试运行以下代码以了解如何call()在JavaScript中实现方法-
<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>