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

If we are dealing with primitives for all of these properties you can use Object.assign with no worries

var objectTemplate = {
    start: start,
    end: end,
    type: 0
};

var object1 = Object.assign({}, objectTemplate, {type: 1})
    object2 = Object.assign({}, objectTemplate, {type: 2}),
    object3 = Object.assign({}, objectTemplate, {type: 3});

You don't have to use a template object, you could jump straight into the first object (see previous revision), but as @Blindman67 points out: if you can't guarantee an object will be as you expect then it may be better to use a template which you can guarantee.