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delegate-it

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delegate-it

Lightweight event delegation

  • 1.1.0-3
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
7.2K
decreased by-9.56%
Maintainers
1
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delegate-it Build Status

Lightweight event delegation

This is a fork of the popular delegate with some improvements:

  • debugged (2d54c11, c6bb88c)
  • modern: ES6, TypeScript, Edge 15+ (it uses WeakMap and Element.closest())
  • idempotent: identical listeners aren't added multiple times, just like the native addEventListener

If you need IE support, you can keep using delegate

Install

npm install delegate-it

Setup

const delegate = require('delegate-it');
import delegate from 'delegate-it';

Usage

Add event delegation

With the default base (document)
delegate('.btn', 'click', event => {
    console.log(event.delegateTarget);
});
With an element as base
delegate(document.body, '.btn', 'click', event => {
    console.log(event.delegateTarget);
});
With a selector (of existing elements) as base
delegate('.container', '.btn', 'click', event => {
    console.log(event.delegateTarget);
});
With an array/array-like of elements as base
delegate(document.querySelectorAll('.container'), '.btn', 'click', event => {
    console.log(event.delegateTarget);
});

Remove event delegation

With a single base element (default or specified)
const delegation = delegate(document.body, '.btn', 'click', event => {
    console.log(event.delegateTarget);
});

delegation.destroy();
With multiple elements (via selector or array)

Note: selectors are always treated as multiple elements, even if one or none are matched. delegate() will return an array.

const delegations = delegate('.container', '.btn', 'click', event => {
    console.log(event.delegateTarget);
});

delegations.forEach(function (delegation) {
    delegation.destroy();
});

Browser Support

Chrome logoEdge logoFirefox logoInternet Explorer logoOpera logoSafari logo
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Package last updated on 18 Mar 2019

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