Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

var	str = "{Hello world} Hello Mark! {bred Hello Tod} Hello Bred Bred {bred bred Hello Silvia}";
var	res =	str.replace(/[^{]hello/ig, "****"); 

document.write("<h1>Str:</h1>");
document.write(str);
document.write("<br>");
document.write("<h1>Res:</h1>");
document.write(res);

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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