function deepEqual(a,b){

  if((typeof a=='object'&& a!=null)&&(typeof b=='object'&& b!=null)){

   if(Object.keys(a).length != Object.keys(b).length){

     return false

   }    

    for(let key in a){

      let aValue = a[key]

      let bValue = b[key]

      if (typeof aValue == 'object' && typeof bValue == 'object') {

        // catches nested objects and recursively assesses deep equality

        if(!deepEqual(aValue, bValue)) return false

      }

      else if (aValue !== bValue) {

        // if the values are not objects, catches if they are not equal

        return false

      }

    }

   return true

  }else if(a!==b){

    return false

  }

  else{

    return true

  }

}

​

var 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