(JS) handwriting depth comparison

// Deep comparison 
function isObject(obj) {
    
	return typeof obj==="object" ? true : false;
}
function isEqual(obj1,obj2) {
    
	if(!isObject(obj1) || !isObject(obj2)) {
    
		return obj1 === obj2;
	}
	if(obj1 === obj2) {
    
		return true;
	}
	//  Take out obj1 and obj2 Of key
	const obj1Keys = Object.keys(obj1);
	const obj2Keys = Object.keys(obj2);
	if(obj1Keys.length !== obj2Keys.length) {
    
		return false;
	}
	for(let keys in obj1) {
    
		//  Recursive comparison obj1 and obj2 Value 
		var result = isEqual(obj1[keys],obj2[keys]);
		if(!result) {
    
			return false;
		}
	}
	return true
}
var obj1 = {
    
	a:100,
	b:100,
	c:{
    
		x:100,
		y:200
	}
}
var obj2 = {
    
	a:100,
	b:100,
	c:{
    
		x:100,
		y:200
	}
}
console.log(isEqual(obj1,obj2)) //true