deepEqual

deepEqual.js

/*
     This is nothing more but a small javascript I wrote for task 
     I was set out to do, but I stored it here, for personal reasons.
     If you hae a use for it, oh well, use it. ;)
*/


function deepEqual(a,b){
	if (typeof(a)!=typeof(b)) { return false; }
	if (a==null && b==null) { return true; } 
	if (a==null || b==null) { return false; }
	if (typeof(a)=="object") {
		if (a==b) return true; // No need to go recursive over the same data, so let's save TIME :P		
		for (let k of Object.keys(a)) { if (!(k in b)) return false; }
		for (let k of Object.keys(b)) { if (!(k in a)) return false; }
		let ret=true;
		for (let k of Object.keys(a)) ret=ret && deepEqual(a[k],b[k]);
		return ret;
	}
	// In all other cases, just compare!
	return a===b;
}


// Test
let obj = {here: {is: "an"}, object: 2};
console.log(deepEqual(obj, obj));
// → true
console.log(deepEqual(obj, {here: 1, object: 2}));
// → false
console.log(deepEqual(obj, {here: {is: "an"}, object: 2}));
// → true