Minimal (über fast) Javascript engine compatible with node.js and browsers.
- Javascript templating lib for node and modern browsers
- Ultra fast, ultra small, ultra fast to learn
- Uses
[[ ]]by default (customizable), so plays well with{{ }}(Angular, Ember...) - Define and call your own block definition (functions) for reuse
- Node: Parent layout and include files supported
$ npm i bracket-template
or
$ yarn add bracket-template
or
fork on github
If you want to use bracket with express, it's recommended to use consolidate.js as it makes is easy to change engine and implements a cache.
If you want to use bracket in your node project for building your email templates for example, you can use it directly. (For Express, it's recommended to use consolidate.js)
Bracket works great with modern browsers. The tests are run on the latest chrome browser (more browser tests to come).
- Anything between
[[ ... ]]is executed as javascript. - Anything bewteen
[[= ... ]]is interpolated (i.e. print string values)
For example
[[ var test = 'wor'; ]]
Hello [[= test + '..ld' ]]
→ Result Hello wor..ld
- Block definition
[[## someFunc(someArg...) ... #]] - Call blocks with
[[# someFunc(...) ]]
For example
<!-- Call block -->
Hello [[# block1('world') ]]
<!-- Block definition -->
[[## block1(arg1)
from block1 (with '[[= arg1 ]]')
#]]→ Result Hello from block 1 (with 'world')
Helper methods can be passed during the compilation of the template. This is especially useful for passing a translation method for example.
Example
var template = bracket.compile(
"Hello world: [[# translate('Hello world') ]]",
{
helpers: {
translate: function(text) {
return 'Bonjour le monde';
}
}
}
);
template();→ Result Hello world: Bonjour le monde
When used in node, you can define a master layout and include partial files.
Layout declarations are done in yaml at the beginning of the template file.
index.brkt.html
---
master: master.brkt.html
title: Index page
---
<!-- Define blocks used in master.brkt.html -->
[[## body()
Hello from index.brkt.html
#]]
[[## body2()
Hello from index.brkt.html again
#]]master.brkt.html
<!doctype html>
<html lang="en">
<head>
<title>[[= layout.title || 'default title' ]]</title>
</head>
<body>
Hello from master.brkt.html <br />
[[# body() ]] <br />
[[# body2() ]]
</body>
</html>→ Result
<!doctype html>
<html lang="en">
<head>
<title>Index page</title>
</head>
<body>
Hello from master.brkt.html <br />
Hello from index.brkt.html <br />
Hello from index.brkt.html again
</body>
</html>The master file specified can be
- relative to the current file
../_layout/master.brkt.html - relative to the views set in express
app.set('views', path.resolve(__dirname, 'views'));
Pro tip
- Custom variables can be defined in the yaml (like title in the example) and used in the master.
- Default values in this format
[[= layout.title || 'default title' ]]
You can include another file in your template file.
index.brkt.html
<!doctype html>
<html lang="en">
<head>
<title>Example</title>
</head>
<body>
[[# partial('header.brkt.html', { current: 'contact' }) ]]
</body>
</html>header.brkt.html
<nav>
<ul>
<li>Home</li>
<li>Contact</li>
</ul>
</nav>→ Result
<!doctype html>
<html lang="en">
<head>
<title>Example</title>
</head>
<body>
<nav>
<ul>
<li>Home</li>
<li>Contact</li>
</ul>
</nav>
</body>
</html>You can customize all the settings and regex used by bracket.
Default settings
const settings = {
// Extract anything inside [[ ]] to be evaluated as js
evaluate: /\[\[([\s\S]+?(\}?)+)]]/g,
// Extract anything in the form [[= model ]]
interpolate: /\[\[=([\s\S]+?)]]/g,
// Extract any block call [[# block1('arg') ]]
block: /\[\[#\s*([\w]+)\(([\s\S]*?)\)\s*]]/g,
// Extract any block definition [[## block1(arg) #]]
blockDef: /\[\[##\s*([\w]+)\(([\s\w,]*)\)\s*[\n]([\s\S]*?)\s*#]]/g,
// extract the argument values from a function call
// e.g. { test1: '123', test2: 456, test3: true }, 'aaa', true, {}, ''
argValues: /\s*({[\s\S]*?}|[^,]+)/g,
// The params to pass to the template function
// For multiple params, comma delimited e.g. 'model,model2,model3...'
varname: 'model',
};Pro tip If you want to pass more than one model, change the varname to 'model, model2' and your template function will accept 2 models.