Nodejs Handlebars How to run serverside javascript

Question

I am trying to use Handlebars on Nodejs.

I can execute plain vars but what if I want to execute javascript code to output some values? In PHP we would do this :

<div>This is formatted date : &lt;?php echo date($oldDate); ?&gt; </div>

Example in nodejs handlebars:

<div>This is non formatted date: {{olddate}}</div>
<div>This is formatted date : {{ date(olddate)}}</div>

I know that in EJS template engine we can do this by putting inside <% like this

<div>This is formatted date : <% date(olddate)%></div>

Thank you for your answers

Thanks Jonathan, So basically, I can create a custom helper and use it. — Alex Ros
– Alex Ros, Commented Feb 22, 2016 at 5:53
@Jonathan Please write this as an answer so I can choose it. — Alex Ros
– Alex Ros, Commented Feb 22, 2016 at 6:04

Jonathan Lonowski · Accepted Answer · 2016-02-22 06:11:52Z

1

Handlebars doesn't support executing JavaScript expressions, including function calls, within the template. This is likely because it was inspired by Mustache's "logic-less templates," adding only a minimal amount of logic.

What is uses instead are helpers:

<div>This is formatted date : {{date olddate}}</div>

And, it allows you to define your own using Handlebars.registerHelper():

Handlerbars.registerHelper('date', function (dateValue) {
    return new Date(dateValue).toString();
});

Example: https://jsfiddle.net/sznkd4eo/

edited Feb 22, 2016 at 6:11

answered Feb 22, 2016 at 6:06

Jonathan Lonowski

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