Alchemize

Transform nodes as they are added to the page.

Table of contents

• Install
• Usage
• Browser compatibility
• API
• License

Install

With npm installed, run

$ npm install alchemize

Or, with Yarn,

$ yarn add alchemize

Alternatively, download alchemize.min.js

Usage

import alchemize from 'alchemize'

alchemize('.water', function(el) { $(el).addClass('wine').removeClass('water').text('wine') })

Or,

<script type="text/javascript" src="https://unpkg.com/[email protected]/browser/alchemize.min.js"></script>
<script type="text/javascript">
  alchemize('.water', function(el) { $(el).addClass('wine').removeClass('water').text('wine') });
</script>

Browser compatibility

Alchemize is based entirely on the MutationObserver native class (including the prefixed WebkitMutationObserver). If this class is not present, Alchemize will not work at all.

API

alchemize(matches, transform, parent)

Runs transform everytime a matching element is added to parent.

Arguments

• matches (required) - This argument is either:
  • A CSS selector string (ex. "div#id.class")
  • A function that returns a boolean (ex. (el) => el.nodeType === 1 && $(el).hasClass('.selector'))
• transform (required) - This argument is either:
  • A constant that the element will be replaced with (for example, plain text or a Node).
  • A function that operates on the element. (ex. (el) => { $(el).addClass('added') }))
• parent (optional, default: document.documentElement) - The top level element to watch for added childrens.

Returns

• Observer instance.

Observer

Methods

observer.connect()

Starts watching for added nodes if not already.

observer.disconnect()

Stops watching for added nodes.

observer.operate(fn)

Pauses observation until function terminates.

Arguments

• fn (required) - Function to call once observation is suspended. Bound to Observer instance.

Returns

• Whatever fn returns.

Properties

• connected (boolean) - Whether the instance is observing or not.

License

MIT © James Anthony Bruno