[Javascript] How can I replace all the occurrences of a given substring in a long string?

Question

I want to  replace all the occurrences of a given substring in a long string, How can I do that in JavaScript?

Meera · Accepted Answer

Let us consider the below string, where you want to replace 123 with xyz.

```js
let str = 'abc 123 abc 123 abc 123 abc 123';

console.log(str.replace(/123/g,'xyz'));
```

Run here [https://onecompiler.com/javascript/3xns8rbbm](https://onecompiler.com/javascript/3xns8rbbm)

1 Answer