JavaScript call and apply method _javascript tips

Examples are as follows:

Copy Code code as follows:

<script>
/**
* Animal
*/
function Animal () {
This.name= ' Amimal ';
This.showname=function () {
alert (this.name);
};
}
/*
* Cat
*/
function Cat () {
This.name= ' cat ';
}
var animal=new animal;//Create Animal objects
var cat=new cat;//Create Cat Object
Animal.showName.call (Cat, ', ');//output cat, indicating that the current this of the ShowName function has become cat
Animal.showName.apply (cat,[]);//Output cat
The difference between the call function and the Apply function is that the call syntax is Function.call (obj,param1,param2 ...). The syntax of Applay is Function.call (obj,[]/*params[] parameter array * *);
</script>