Handlebars

Handlebars is a JavaScript templating engine. A program passes a template string to Handlebars.compile, which returns a function; calling that function with a data object produces the rendered output. Templates can also be precompiled ahead of time, which reduces the runtime a page has to load. The installation guide describes the npm, CDN and download routes. The engine is designed for any ECMAScript 2020 environment, including Node.js and current browsers. It is largely compatible with Mustache templates.

Worth knowing

The project calls Handlebars a pure rendering engine. It has no built-in event handling, backend access or incremental DOM updates, so a page that needs those pairs it with other code or a framework. The installation guide notes that the downloadable browser builds are not meant for production use, and it recommends a build tool for browser projects.