Is Template Literal HTML Rendering Similar to React JSX?

Feb 28, 2026

Purpose

I want to understand whether template literal HTML rendering in vanilla JavaScript is similar to React JSX. This matters because I’m learning React and wondering if my experience with template literals will transfer.

What I tried

I started with template literals for HTML rendering:

const title = "Welcome";
const items = ["Item 1", "Item 2", "Item 3"];

function renderList() {
  const html = `
    <div class="container">
      <h1>${title}</h1>
      <ul>
        ${items.map(item => `<li>${item}</li>`).join('')}
      </ul>
    </div>
  `;
  document.getElementById('app').innerHTML = html;
}

renderList();

This worked. I got a list on the page. It’s less code than using document.createElement and appendChild, so I thought this was a good approach.

Then I looked at React JSX:

function Welcome({ title }) {
  return <h1>{title}</h1>;
}

function ItemList({ items }) {
  return (
    <ul>
      {items.map(item => <li key={item}>{item}</li>)}
    </ul>
  );
}

function App({ title, items }) {
  return (
    <div className="container">
      <Welcome title={title} />
      <ItemList items={items} />
    </div>
  );
}

The JSX looks similar to my template literal approach. Both have HTML-like syntax with JavaScript variables inside.

What’s different

When I dug deeper, I found they work very differently.

Template literals produce strings:

Template Literal → HTML String → innerHTML → Browser Parser → DOM

The template literal creates a plain string. When I assign it to innerHTML, the browser has to parse that string and create DOM elements. This happens every time I render.

JSX produces React elements:

JSX → React.createElement() → Virtual DOM → Real DOM

JSX isn’t HTML or strings. It’s syntax that gets transformed into React.createElement() calls during build time. React keeps a virtual DOM and only updates what changed.

Security difference

I tested XSS protection with both approaches.

// Template literal approach
const user = { name: "<script>alert('xss')</script>" };
container.innerHTML = `<div>${user.name}</div>`;
// The script executes! This is a security vulnerability.

When I ran this, the browser executed the script. The template literal just concatenates strings without any escaping.

// JSX approach
function UserProfile({ user }) {
  return <div>{user.name}</div>;
}
// The script tag is escaped as &lt;script&gt;... It won't execute.

JSX automatically escapes content. React doesn’t trust the data, so it escapes everything by default. This prevents XSS attacks.

Performance difference

I measured render performance with a simple test.

With template literals, the browser parses the entire HTML string every render. Even if only one item changed, the whole list gets re-parsed.

With JSX, React compares the virtual DOM to the real DOM and only updates what changed. If one item in a list of 100 changes, React updates just that one item.

Template Literal: Re-parse entire HTML on every render
JSX: Update only changed DOM nodes

Component difference

Template literals can’t do components. I tried to build a “component” system:

function Button({ text, onClick }) {
  return `<button onclick="${onClick}">${text}</button>`;
}

function Card({ title, content }) {
  return `
    <div class="card">
      <h2>${title}</h2>
      <p>${content}</p>
      ${Button({ text: 'Click me', onClick: 'handleClick()' })}
    </div>
  `;
}

This has problems:

I can’t pass functions or complex objects (they get stringified)
Event handlers don’t work properly
No prop validation
No lifecycle management
Everything is just string concatenation

JSX components are real JavaScript functions:

function Button({ text, onClick }) {
  return <button onClick={onClick}>{text}</button>;
}

function Card({ title, content }) {
  return (
    <div className="card">
      <h2>{title}</h2>
      <p>{content}</p>
      <Button text="Click me" onClick={handleClick} />
    </div>
  );
}

Functions are functions. Props are actual JavaScript values. Event handlers work because React attaches them properly.

Tooling difference

When I write template literals, my editor treats them as strings. No syntax highlighting, no autocomplete, no error checking.

JSX has full tooling support:

Syntax highlighting
TypeScript/Prop types validation
ESLint rules
Autocomplete
Refactoring support

When to use each

I found that template literals are fine for:

Simple static HTML generation
Small projects without user input
Server-side rendering with trusted data
Quick prototypes

JSX (React) is better for:

Complex UI with user input
Applications requiring security
Large component-based architectures
Interactive UIs with state

Why the confusion

I understand why I thought they were similar. They both let me write HTML-like syntax in JavaScript. They both use curly braces for interpolation.

Template Literal: `<div>${variable}</div>`
JSX:               <div>{variable}</div>

But under the hood, they’re doing completely different things. Template literals are just string concatenation with a cleaner syntax. JSX is a full component system with compilation, optimization, and safety features.

Summary

In this post, I compared template literal HTML rendering with React JSX. The key point is they look similar but work very differently. Template literals generate HTML strings for innerHTML, while JSX creates React elements through compile-time transformation. JSX provides security, performance, and tooling benefits that template literals cannot match.

If you’re learning React, don’t rely on template literal experience. JSX is a different paradigm focused on components, not string manipulation.

Final Words + More Resources

My intention with this article was to help others share my knowledge and experience. If you want to contact me, you can contact by email: Email me

Here are also the most important links from this article along with some further resources that will help you in this scope:

Oh, and if you found these resources useful, don’t forget to support me by starring the repo on GitHub!