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javascriptvariables

How to change a variable

How to change a variable once it is set like this:

const myVar = 'test';

I have tried the following:

myVar = 'test2';

const myVar = 'test3';

Solution

  • Const are constants. They are not intended to be changed once they are set with their initial value. Simply use a standard variable type without specifying const.

    var myVar = 'test';
myVar = 'another';

const site = 'Stackoverflow';
site = 'Google'; // this will throw an error in Firefox and Chrome (but does not fail in Safari)

const site = 'fb';// trying to redeclare a constant throws an error

console.log(myVar); //outputs another
console.log(site); //Stackoverflow

    Reference: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Statements/const