Templating with Handlebars and Nodejs

There are many frameworks present today that does DOM manipulation. But, DOM manipulation is useful only with simpler Javascript apps. If we want to deal with huge amount of data, we will need to take the support of templating.

One of the templating libraries is Handlebar.js. Handlebars.js is the lightest and one of the fastest templating libraries I have worked with.

How to work with Handlebars ?

Handlebars can be said as the superset of Mustache templating language. In Open-event-web app, Handlebars is used along with Node.js.

1. To install Handlebars
npm install handlebars
2. To include handlebars
const handlebars = require('handlebars');
const fs         = require('fs-e'xtra);
3. To compile a file ( Extension .tpl or hbs)
const tpl = handlebars.compile(fs.readFileSync(__dirname +   '/templates/schedule.hbs').toString('utf-8'));
fs.writeFileSync(distHelper.distPath + '/' + appFolder + '/tracks.html', tpl(jsonData));

Here jsonData is the JSON Array of objects provided to the template.

An example of a .hbs templating file can be :

 <div class="track-names col-md-2">
 {{# tracks}}
 {{#if title}}
 
 <ul class="title-inline">
 <li style="background-color:{{{color}}}" class="titlecolor"></li>
 <li>{{title}}</li>
 </ul>
 
 {{/if}}
 {{/tracks}} 
 </div>