JSFiddle - React, Tailwind, and code Playground

HTML

<div id="abc"></div>

JavaScript

$(document).ready(function() {
    $("#abc").html(fff("Ismial {0} sdjflsdkfjls f{1} sdlfjksldkfjsk", {"0":"0000","1":"111"}));

});

function fff(str, obj) {
    return str.replace(/\{\s*([^}\s]+)\s*\}/g, function(m, p1, offset, string) {
        return obj[p1]
    })
}