Jul 11, 2009 · The point of the constructor property is to provide some way of pretending JavaScript has classes. One of the things you cannot usefully do is change an object's constructor after it's been …

Aug 28, 2014 · An Object Constructor is essentially a function that 'contructs' the object. It does this through the code inside the constructor function, which may use other code (ie: through function …

Oct 6, 2010 · Calling the constructor function with that object instance as the this value (you're doing that). Handling the special return value from the constructor function.

Feb 1, 2011 · A constructor should be used if you require multiple instances of the data or require behavior from your object. Note the function constructor is also best used when you want to simulate …

Jul 28, 2010 · 59 Basically if your constructor returns a primitive value, such as a string, number, boolean, null or undefined, (or you don't return anything which is equivalent to returning undefined), a …

Jan 31, 2013 · A constructor, as its name suggests, is designed to create and set up multiple instances of an object. An object literal on the other hand is one-off, like string and number literals, and used …

Feb 5, 2013 · Passing object as parameter to constructor function and copy its properties to the new object? Asked 15 years ago Modified 5 years, 5 months ago Viewed 33k times

Apr 21, 2016 · In creating javascript objects, I can put a method declaration either in the constructor function or in the prototype. For example, say I want a Dog class that has a Name property and a …

Nov 22, 2016 · I am trying to define a Javascript class with a defined constructor with params with the most proper ES6 syntax. At first, it is easy to define it like this. let param1 = 10; let param2 = 'fo...

Apr 11, 2012 · As an unrelated side node, general JavaScript style guidelines recommend starting a variable identifier with an uppercase letter only if it is a constructor: "Project" is okay, but the leading …