hyperfast

update html elements by mapping query selectors to attributes, text, and hypertext

It's a fork of hyperglue, but about 10x faster.

example

in node

var hyperfast = require('hyperfast');
var fs = require('fs');
var html = fs.readFileSync(__dirname + '/article.html');

function createArticle (doc) {
    var name = doc.title.replace(/[^A-Za-z0-9]+/g,'_');
    return hyperfast(html, {
        '.title a': {
            name: name,
            href: '#' + name,
            _text: doc.title
        },
        '.commit': doc.commit,
        '.author': doc.author,
        '.date': doc.date,
        '.body': { _html: doc.body }
    });
}

console.log(createArticle({
    file: 'grobot.markdown',
    author: 'James Halliday',
    date: 'Mon Dec 24 15:31:27 2012 -0800',
    title: 'robots are pretty great',
    commit: '81c62aa62b6770a2f6bdf6865d393daf05930b4a',
    body: '<h1>robots!</h1>\n\n<p>Pretty great basically.</p>'
}).innerHTML);

console.log(createArticle({
    file: 'test.markdown',
    author: 'James Halliday',
    date: 'Mon Dec 24 04:31:53 2012 -0800',
    title: 'testing title',
    commit: '2a516000d239bbfcf7cdbb4b5acf09486bdf9586',
    body: '<h1>title text</h1>\n\n<p>beep boop.</p>\n\n<p><em>rawr</em></p>'
}).innerHTML);

arrays

You can also duplicate existing elements in order to render arrays of results:

var hyperfast = require('hyperfast');

var html = [
    '<div id="rows">',
    '<div class="row">',
    '<span class="name"></span>',
    '<span class="message"></span>',
    '</div>',
    '<b>ahoy!</b>',
    '</div>'
].join('\n');

console.log(hyperfast(html, {
    '.row': [
        { '.name': 'T-REX', '.message': 'RAWR' },
        { '.name': 'robot', '.message': 'beep boop' },
        { '.name': 'Dr X', '.message': 'mwahaha' }
    ]
}).outerHTML);

output:

<div id="rows">
<div class="row">
<span class="name">T-REX</span>
<span class="message">RAWR</span>
</div>
<div class="row">
<span class="name">robot</span>
<span class="message">beep boop</span>
</div>
<div class="row">
<span class="name">Dr X</span>
<span class="message">mwahaha</span>
</div>
<b>ahoy!</b>
</div>

methods

var hyperfast = require('hyperfast')

hyperfast(src, updates)

Return an html element from the source string or element src with updates applied to it. In the browser you get a complete html element. In node you get an object with an innerHTML property populated with the string contents of the replacement.

updates should have query selectors as keys and target strings, numbers, or objects as values.

Each update query selector can have the special pseudo-class :first which causes the selector to only match the first value like querySelector() instead of all the matching elements like querySelectorAll(), the default.

If the target values in updates are strings or numbers, set the inner text content of the matching elements to that value.

When the target values are html elements, replace the inner content at the selected element with a clone of the value.

For target values of arrays, recursively apply hyperfast(node.cloneNode(), value) for each matching element in the array and then remove the original node. This feature makes rendering arrays of content super simple.

If the target values in updates are non-html element objects, update the attributes on all matching elements with the keys in the target values. Use '_text' to set the text content and '_html' to set the innerHTML in object form. If '_html' is an HTML element, replace the inner content at the selector elements with a clone of the '_html' value.

install

With npm do:

npm install hyperfast

license

MIT

kudos

Inspried by plates.