need explanation of the _.bindAll() function from Underscore.js

Question

I\'ve been learning some backbone.js and I\'ve seen plenty of instances where _.bindAll() is used. I have read through the entire backbone.js and underscore.js docu

Answer 1

The simplest explanation as for me is the next:

initialize:function () { //backbone initialize function
    this.model.on("change",this.render); //doesn't work because of the wrong context - in such a way we are searching for a render method in the window object  
    this.model.on("change",this.render,this); //works fine
    //or 
    _.bindAll(this,'render');
    this.model.on("change",this.render); //now works fine
    //after  _.bindAll we can use short callback names in model event bindings
}