Can you help with regex?

Question

JavaScript

It is necessary between two // `let str = "qwe//qwe";` to insert any text, but then this text can be replaced with another

Answer 1

const str = 'qwe//qwe';
const reg = /(qwe\/).*(\/qwe)/;
const replacement = 'hello, world!!';
const newStr = str.replace(reg, `$1${replacement}$2`);

Answer 2

let str = "qwe//qwe";
console.log(str.replace(/\/\//g, "/"+"любой текст"+"/"))