JavaScript template engine
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README.md

JUST

JavaScript template engine.

Installation

npm install just

Features

  • Caching templates
  • Automatic reloading of changed templates
  • JavaScript code in templates
  • Supports tag customization
  • Node.JS and client-side support
  • Powerful but simple syntax
  • Inheritance, partials, blocks

Usage

var JUST = require('just');

var just = new JUST({ root : __dirname + '/view', useCache : true, ext : '.html' });

just.render('page', { title: 'Hello, World!' }, function(error, html) {
	console.log(error);
	console.log(html);
});

You may use JavaScript object as root.

var JUST = require('just');

var just = new JUST({ root : {
				layout: '<html><head><title><%= title %></title></head><body><%*%></body></html>',
				page: '<%! layout %><p>Page content</p>'
				}, useCache : true
			});

just.render('page', { title: 'Hello, World!' }, function(error, html) {
	console.log(error);
	console.log(html);
});

See full example in examples folder.

Syntax

Output

<%= someVar %>

JavaScript code

<% for (var i = 0; i < articles.length; i++) { %>
	<% this.partial('article', { article: articles[i] }); %>
<% } %>

or

<% if (user.authenticated) { %>
	<%@ partials/user %>
<% } else { %>
	<%@ partials/auth %>
<% } %>

Inheritance

<%! layout %>

or

<%! layout { customVar: 'Hello, World!' } %>

Use

<%*%>

in parent template to define the insertion point.

Partials

<%@ partial %>

or

<%@ partial { customVar: 'Hello, World!' } %>

Blocks

<%[ blockName %>
	<p>This is block content</p>
<%]%>

Use

<%* blockName %>

in parent template to define the insertion point.

Blocks supports more than one level of inheritance and may be redefined.

Conditions

<%? someVar == 1 %>
	<p>Var is 1</p>
<%: someVar == 2 %>
	<p>Var is 2</p>
<%:%>
	<p>Var is other</p>
<%?%>

Loops

<%| comments comment %>
	<p><%= comment.text %></p>
<%|%>

Options

  • root Templates root folder or JavaScript object containing templates
  • ext Extension of templates, defaulting to '' (not used for JavaScript objects as root)
  • useCache Compiled functions are cached, defaulting to false
  • watchForChanges Automatic reloading of changed templates, defaulting to false (useful for debugging with enabled useCache, not supported for client-side)
  • open Open tag, defaulting to '<%'
  • close Closing tag, defaulting to '%>'

Client-side support

Basically, include just.min.js to a page and JUST ready to use.

var just = new JUST({ root : '/view', useCache : true, ext : '.html' });

just.render('page', { title: 'Hello, World!' }, function(error, html) {
	console.log(error);
	console.log(html);
});

NOTE: root folder must be on the same domain to avoid cross-domain restrictions.

License

(The MIT License)

Copyright (c) 2012 Vadim M. Baryshev <vadimbaryshev@gmail.com>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.