Render functions vs templates decision in Vue - When to Use Which

The Big Idea

Discover how choosing between templates and render functions can make your Vue projects easier or more powerful!

The Scenario

Imagine building a web page where you must update the layout and content by writing plain HTML every time the data changes.

You have to manually change each part of the page, which is slow and confusing.

The Problem

Manually updating HTML for every change is tiring and easy to mess up.

You might forget to update some parts or create inconsistent layouts.

This slows down development and causes bugs.

The Solution

Vue offers two ways to build UI: templates and render functions.

Templates let you write HTML-like code that Vue turns into UI automatically.

Render functions let you write JavaScript code to create UI, giving more control when needed.

Before vs After

✗ Before

<div id='app'>Hello World</div>

✓ After

const render = () => h('div', `Hello ${name}`)

What It Enables

This choice lets you pick simple, readable templates or powerful, flexible render functions to build your UI efficiently.

Real Life Example

When making a simple blog, templates make writing posts easy.

For a complex dashboard with dynamic widgets, render functions give you the control to customize every part.

Key Takeaways

Manual HTML updates are slow and error-prone.

Templates simplify UI building with familiar HTML syntax.

Render functions offer advanced control for complex interfaces.