JSFiddle - React, Tailwind, and code Playground

by resting

JavaScript

var obj= {
    margin: 10,
    setMargin: function(val) { this.margin = val; },
    foptions: { labelMargin: this.margin },
    marginClone: this.margin
}

obj.setMargin(2);
console.dir(obj.foptions);
console.log(obj.marginClone);
console.log(obj.margin);