eta

What is eta?

Eta is a fast, lightweight, and highly configurable embedded JavaScript template engine. It is designed to be simple and easy to use, while also being powerful enough to handle complex templating needs.

What are eta's main functionalities?

Basic Template Rendering

This feature allows you to render a basic template with embedded JavaScript expressions. The `render` function takes a template string and a data object, and returns the rendered string.

const eta = require('eta');
const template = 'Hello, <%= it.name %>!';
const data = { name: 'World' };
const result = eta.render(template, data);
console.log(result); // Output: Hello, World!

Template Caching

Eta supports template caching, which allows you to define and reuse templates by name. This can improve performance by avoiding the need to recompile templates on each render.

const eta = require('eta');
eta.templates.define('greeting', 'Hello, <%= it.name %>!');
const data = { name: 'World' };
const result = eta.render('greeting', data);
console.log(result); // Output: Hello, World!

Custom Filters

Eta allows you to define custom filters that can be used within templates to transform data. In this example, a custom filter `shout` is defined to convert a string to uppercase and add exclamation marks.

const eta = require('eta');
eta.configure({
  filters: {
    shout: (str) => str.toUpperCase() + '!!!'
  }
});
const template = 'Hello, <%= it.name | shout %>!';
const data = { name: 'World' };
const result = eta.render(template, data);
console.log(result); // Output: Hello, WORLD!!!

Other packages similar to eta

ejs

EJS (Embedded JavaScript) is a simple templating language that lets you generate HTML markup with plain JavaScript. It is similar to Eta in terms of syntax and functionality, but Eta is generally faster and more lightweight.

pug

Pug (formerly known as Jade) is a high-performance template engine heavily influenced by Haml. It is known for its clean and minimal syntax. Compared to Eta, Pug offers a more concise syntax but has a steeper learning curve.

handlebars

Handlebars is a popular templating engine that provides a more logic-less approach to templates. It uses a Mustache-like syntax and is known for its simplicity and ease of use. Unlike Eta, Handlebars enforces a separation of logic and presentation.

README

Eta — Selēne

We use the seventh letter of the Greek alphabet...

Law

This is free and unencumbered public domain software. For more information, see http://unlicense.org/.