How to remove a particular digit from an integer using javascript

Question

I have an integer containing various digits, I want to remove 4th digit from an integer. How can I achieve that ?

Example :

let number = 789012345

Here I want to remove 0

Answer 1

Try this :

// Input
let number = 789012345;

// Convert number into a string
let numberStr = number.toString();

// Replace the 0 with empty string
const res = numberStr.replace(numberStr[3], '');

// Convert string into a number.
console.log(Number(res));