Question

I am making something like this:

var talkAPI = {
    init: function(){
        setInterval(function(){
            this.speak();
        },1000);
    },
    speak: function(){
         //Something else
    }
};

However, I found this is not working as I expected. So I did some tests, and I found out that this in the setInterval is referring to the Window. And this is not I wanted. So how can I re-refer this to talkAPI? Because I don’t want to do this:

setInterval(function(){
    window.talkAPI.speak();    //Not so good
},1000); 

Answer 1

You need to save the original this for use in the callback

init: function() {
    var self = this;
    setInterval(function(){
        self.speak();
    },1000);
},