Question

I have code like:

MyClass = {

   init: function(){
   marker = 0;
   //I call foo() and bar() from here
   },

   foo: function(){
   //I want to access & update marker here
   },

   bar: function(){
   //This function also accesses updates marker
   }
};

I can access the marker by passing it as a parameter to functions but I will not be able to update it.

So, how do I manage creating a variable marker such that all three functions can share it? I don’t want to write any code outside MyClass.

Answer 1

Put marker in MyClass, not in init, where it is right now.

MyClass = {
   // marker is in MyClass now
   marker: 0,

   init: function(){
      console.log(this.marker);
   //I call foo() and bar() from here
   },

   foo: function(){
   //I want to access & update marker here
   },

   bar: function(){
   //This function also accesses updates marker
   }
};