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Necktie – a simple DOM binding tool
Necktie is a library that binds your logic to the Document Object Model elements in an easy way. It has only ~3kB (UMD, minified).
How it works
Necktie takes its powers from document.querySelector and MutationObserver capabilities. This tool allows you to register a function or a class that will be called with a proper Element as an argument, even if it's created or removed dynamically.
For example:
import { Necktie } from '@lesniewski.pro/necktie';
const tie = new Necktie();
tie.startListening();
tie.bind('.form-component input[data-name]', (element) => {
console.log(element, 'has been found in the DOM');
return (removedElement) => {
console.log(removedElement, 'has been removed from the DOM');
};
});
Necktie is meant for mostly static pages, but should work also in SPA model, although it may be CPU-expensive, especially using observeAttributes().
Installation
Using:
- npm:
npm install @lesniewski.pro/necktie - yarn:
yarn add @lesniewski.pro/necktie - jsDelivr (embed directly in your HTML file): https://www.jsdelivr.com/package/npm/@lesniewski.pro/necktie
Documentation
It's recommended to include Necktie in the <head> section of the document.
The library comes with CJS, ESM and UMD modules. TypeScript types are also available.
Components
Necktie class
| Method | Description |
|---|---|
constructor(): this |
Creates a new Necktie instance. |
bind(selector: string, callback: Callback): this |
Binds a callback function with a given selector. |
bindClass(selector: string, BindableComponent: Bindable): this |
Binds a Bindable class with a given selector. |
observeAttributes(isEnabled?: boolean): this |
Looks for attributes changes, for example class or data-*. Rebinds registered functions if necessary. WARNING! Use with caution, this may be expensive. |
startListening(): this |
Runs callbacks or Bindable classes on registered selectors, starts listening for DOM changes. |
Bindable class
| Method | Description |
|---|---|
constructor(element?: Element): this |
Creates a new Bindable instance. |
destroy(removedElement?: Element): void |
A clean up method, called when a DOM element has been removed. |
Callback function
(element?: Element) => ((removedElement?: Element) => void) | void – a function fired when a proper Element has been found. Optionally it can return a clean up function that will be fired when the element will disappear from the DOM.
TO DO
- Initial release
- Unit tests
- CI automation
Sponsorship
If you appreciate my work, it will be cool to know that I drink my coffee
License
MIT.
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