Syntax
function.apply()
The apply() method is used to apply a method of one object to another object.
Using the apply() method keeps developers from rewriting methods for different objects.
Example
function ClassA(sColor) {
this.color = sColor;
this.sayColor = function () {
alert(this.color);
};
}
function ClassB(sColor, sName) {
ClassA.apply(this, arguments);
this.name = sName;
this.sayName = function () {
alert(this.name);
};
}
var objA = new ClassA("red");
var objB = new ClassB("blue", "Nicholas");
objA.sayColor();
objB.sayColor();
objB.sayName();