Jan 20, 2014 · Recent (loosely used term) JavaScript engines actually compile JS code to get better performance, so using the const keyword would inform them that the optimizations …

Dec 11, 2016 · Why most of the time should I use const instead of let in JavaScript? As we know if we use const then we can't reassign value later. Then why not use let instead of const?

Sep 25, 2008 · Is there a way to use constants in JavaScript? If not, what's the common practice for specifying variables that are used as constants?

Jun 17, 2017 · The const keyword makes a variable itself immutable, not its assigned content. When the content is an object, this means the object itself can still be altered. Therefore, it's …

Are there any limits to what types of values can be set using const in JavaScript, and in particular, functions? Is this valid? Granted it does work, but is it considered bad practice for any reason?

Sep 5, 2012 · const defines a constant (in supporting browsers). Why would you expect to be able to change it? JavaScript will not throw an exception if you try to change the value of a const, …

Apr 18, 2009 · ES6 introduced JavaScript developers the let and const keywords. While let and const are block-scoped and not function scoped as var it shouldn’t make a difference while …

Dec 9, 2016 · const { email,title } = obj; This is ES6 syntax-the simpler one It will automatically assign the email and title from obj; just the name has to be correctly stated for the required field.

@rohan-patel 1) const is making the binding (or ‘link’) between the name of a variable and an object constant. If you use const, that variable name will always reference the same object. 2) …

Because in const you can change the values of an object, so the object does not actually store the assignment data but instead, it points to it. so there is a difference between primitives and …