Pre-increment
The variable is incremented first, and then the updated value is used in the expression.
Example: Using pre-increment.
Javascript
let a = 10;let b = ++a;console.log(a); // Outputs 11 (original value incremented)console.log(b); // Outputs 11 (updated value used in the expression) |
Output
11 11
How to Increment a Variable by 1 in JavaScript ?
In JavaScript, you can increment a variable by 1 using the increment operator (++). There are two ways to use this operator: