Question

I wanna to change object’s property via method called this code:

MAP = MAP || {
   level: 0
   updateProperty(property, value){
        if (this.hasOwnProperty(property){
          this.property = value
        }
   }
}

but when I fire this code I create new property named ‘property’ in my object. But I wanna treat ‘property’ as variable, not as new property!

Answer 1

You probably want this (square brackets this[property] = value;)

var MAP = MAP || {};
MAP = {
    level: 0,
    updateProperty(property, value) {
        if (this.hasOwnProperty(property)) {
            this[property] = value;
        }
    }
};