JS: Modify Value/Pair in JS Object

Question

I\'m trying to work out the best way to modify an object without writing out a similar object three times. So I have these three objects:

var object1 = {
    sta         


        

Answer 1

You can set the common properties to a prototype object. For Example:

function ObjectMaker (typeVal) {
  this.type = typeVal;
}

ObjectMaker.prototype.start = "start";
ObjectMaker.prototype.end = "end";

var object1 = new ObjectMaker("1");
var object2 = new ObjectMaker("2");

gives

> object1.start
"start"
> object1.end
"end"
> object1.type
"1"

You could pass in an object to the maker function if number of variables are more.

Since the prototype is shared across objects, you will have a lighter memory footprint than having the same on each object.