JSFiddle - React, Tailwind, and code Playground

HTML

<div class="foo">
    {text}
</div>

<div class="foo">
    {othertext}
</div>

JavaScript

var newText = {
    text: "some new text",
    othertext: "some other new text"
}

$('div.foo').text(function(i,txt) {
    var key = txt.match(/\{([^}]+)\}/)[1];
    return newText[key];
});