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Handlebars.js Tutorial: Learn Everything About Handlebars.js JavaScript Templating. (A Comprehensive Handlebars.js Tutorial) This is a complete tutorial, and indeed a reference, on Handlebars.js templating and, principally, JavaScript templating. Handlebars.js is a client-side (though it can be used on the server, too) templating engine for JavaScript. It is a JavaScript library that you include in your page just as you include any other JavaScript file. And with it, you can add templates to your HTML page that will be parsed and interpolated (values of properties inserted in place) with the values from the data you passed to the Handlebars.js function.

Written in JavaScript, Handlebars.js is a compiler that takes any HTML and Handlebars expression and compiles them to a JavaScript function. This derived JavaScript function then takes one parameter, an object—your data—and it returns a string with the HTML and the object properties’ values inserted into the HTML. Do I Have To Use a JavaScript Templating Engine? The answers to both of these questions follow. 2. 3. Notes. Try Handlebars.js in your web browser.