calling a function from a different context using javascript?

Question

Im trying to call a function/Method in javscript using OOP style but from a different context.

for example:

var SomeClass = function(){
    this.init = function(){
        var something = "An Interesting Variable";
        this.foo(something); //this works fine
    },
    this.foo = function(bar){
        alert(bar);
    }
    this.foo2 = function(){
        this.foo(something); // this deos not work/ something is not defined
    }

};

var newClass = new SomeClass();
newClass.init();
newClass.foo2();

so basically i want to call this.foo() function within the this.foo2() context, but acting as the this.init(), im not sure this makes sense, but im new to OOP in javascript.

David Hedlund · Accepted Answer · 2014-06-24 11:12:28Z

2

Your context is right, but you're trying to access a variable that isn't defined in that scope. The variable something, declared with var within init will only live inside that function.

You need to make it a member of SomeClass:

this.init = function() {
   this.something = 'An interesting variable';
   this.foo(this.something);
},

this.foo2 = function() {
   this.foo(this.something);
}

answered Jun 24, 2014 at 11:12

David Hedlund

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