Apply/Call method in [removed] What is the first arguments “this”?

Question

I am confused about using apply or call method correctly. I know that apply is passing an array to the function and call is passing strings to a function. For example the code b

Answer 1

this is the scope of the Apply/Call function. An example is:

function test() {
    alert(this.a);
}

(function () {
    this.a = "test";
    test();//test

    var self = this;

    (function () {
        this.a = "Foo";
        test();//Foo
        test.apply(self, []);//test
    }());

}());