JavaScript function that I am using to compare 2 JavaScript object without taking in mind prototypes of these objects.

object.equals.js

// Function that compares 2 objects
function equals(obj1, obj2, skip) {
  var i, l;
  
  if ( typeof obj1 === "object" && typeof obj2 === "object") {
    obj1 = JSON.stringify(obj1);
    obj2 = JSON.stringify(obj2);

    if (skip && skip.length) {
      obj1 = JSON.parse(obj1);
      obj2 = JSON.parse(obj2);
      
      l = skip.length;
      for (i = 0; i < l; i += 1) {
        delete obj1[skip[i]];
        delete obj2[skip[i]];
      }

      obj1 = JSON.stringify(obj1);
      obj2 = JSON.stringify(obj2);
    }
    
    return obj1 === obj2;
  }
}