JSFiddle - React, Tailwind, and code Playground

HTML

<p>First name: <strong data-bind="html: firstName">todo</strong></p>
<p>Last name: <strong>todo</strong></p>

JavaScript

function AppViewModel() {
    this.firstName = "Bert<br\>Test";
    this.lastName = "Bertington";
}

// Activates knockout.js
ko.applyBindings(new AppViewModel());