qekit

v1.3.0

Published

a month ago

A lightweight and chainable library for easy DOM manipulation in modern browsers

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dom element query query-selector

qekit

A lightweight (2.7 kB │ gzip: 1.2 kB) and chainable library for easy DOM manipulation in modern browsers.

Installation

You can install this module using npm or yarn:

npm i qekit
# or
yarn add qekit

Alternatively, you can also include this module directly in your HTML file from CDN:

| Type | URL | | :--- | :----------------------------------------------------- | | ESM | https://cdn.jsdelivr.net/npm/qekit/+esm | | CJS | https://cdn.jsdelivr.net/npm/qekit/dist/index.cjs | | UMD | https://cdn.jsdelivr.net/npm/qekit/dist/index.umd.js |

Usage

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>QeKit</title>
  </head>
  <body>
    <div class="container">
      <div class="item"><strong>Foo</strong></div>
      <div class="item"><em>Bar</em></div>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/qekit/dist/index.umd.js"></script>
    <script>
      // import qe from 'qekit'

      // selects all elements with the class "item"
      const $ = qe('.item') // qe('.item', '.container')

      // rest of examples...
    </script>
  </body>
</html>

[!NOTE]
qekit allows you to select elements using different types of selectors:
CSS Selector String: qe('.foo')
HTMLElement: qe(document.querySelector('#foo'))
NodeList/HTMLCollection: qe(document.querySelectorAll('.foo'))

Contextual selection

Target elements within a specific container or DOM subtree:

HTMLElement:

const container = document.querySelector('#container')
const $ = qe('.item', container)

QeKitInstance:

const $container = qe('#container')
const $ = qe('.item', $container)

CSS selector string:
```
const $ = qe('.item', '#container')
```

[!NOTE]
The parent parameter is used only when the first argument (selectors) is a CSS selector string; otherwise, it is ignored.

Accessing elements by index and collection

Since v1.3.0

qekit allows you to easily access elements within a selection:

get(index?): Returns the element(s) at the specified index or all elements if no index is provided.

const $ = qe('.item')

// get all elements
const elems = $.get()
// get the first element
const first = $.get(0)
// get the third element
const third = $.get(2)
// try to get a non-existent element
const notExist = $.get(10) // returns null

first(): Returns a new QeKitInstance of the first element.
```
const $ = qe('.item')
const $first = $.first()
```
last(): Returns a new QeKitInstance of the last element.
```
const $ = qe('.item')
const $last = $.last()
```
eq(index?): Returns a new QeKitInstance with only the element at the specified index.
```
const $ = qe('.item')
const $third = $.eq(2)
```

Class manipulation

$.addClass('bar') // adds the class "bar" to all selected elements
$.removeClass('bar') // removes the class "bar"
$.toggleClass('baz') // toggles the class "baz"
$.hasClass('baz') // returns true if all elements have the class "baz"

Siblings

Since v1.3.0

Select all sibling elements of the selected elements:

$.eq(1).addClass('.active').siblings().removeClass('.active')

Event handling

const handler = event => {
  // do something...
}

$.on('click', handler) // handle the click event
$.off('click', handler) // removes the event listener

// trigger a custom event with data
$.trigger('customEvent', { message: 'Hello from custom event!', value: 123 })
// ... in your event listener ...
$.on('customEvent', event => {
  console.log(event.detail.message) // Output: "Hello from custom event!"
  console.log(event.detail.value) // Output: 123
})

Native Element methods

qekit automatically attaches native Element methods to the returned object. This allows you to directly call methods like setAttribute, getAttribute, closest, before, after, remove, etc.

$.setAttribute('data-id', '123')

const value = $.getAttribute('data-id')
console.log(value)

Array methods

Since v1.3.0

qekit now lets you chain array methods directly on the returned object, allowing for more fluent operations on the selected elements.

$.map(el => parseInt(el.textContent, 10) * 2)

Chaining

// customize styles
qe('.item')
  .filter(el => eq(el).hasClass('active'))
  .on('click', e => {
    qe(e.currentTarget).toggleClass('highlighted')
  })

// interactions & edit contents
qe('.product')
  .on('click', e => {
    qe(e.currentTarget).toggleClass('shadow').siblings().removeClass('shadow')
  })
  .filter(el => el.dataset.category === 'electronics')
  .forEach(el => {
    const price = parseFloat(el.dataset.price).toFixed(2)
    qe(el).addClass('text-bg-primary').get(0).innerHTML +=
      `<p>Price: $${price}</p>`
  })

API

`qe()`

Selects DOM elements based on the provided CSS selectors and returns a QeKitInstance.

qe<T extends Element = HTMLElement>(
  selectors:
    | string
    | Element
    | Element[]
    | NodeList
    | HTMLCollection
    | EventTarget
    | null,
  parent: Element | Document | string | QeKitInstance | null = document
): QeKitInstance

Methods

get(index?: number): T | T[] | null: Gets the selected element(s) at the specified index or the whole collection if index is not provided.
- If index is provided and within the bounds of the elements, it returns the element at that index.
- If index is not provided, it returns an array containing all the selected elements.
- If index is out of bounds, it returns null.
first(): QeKitInstance: Gets the first selected element.
last(): QeKitInstance: Gets the last selected element.
eq(index: number): QeKitInstance: Returns the element at the specified index or null if the index is out of bounds.
addClass(classname: string): QeKitInstance: Adds a class or classes to each selected element.
removeClass(classname: string): QeKitInstance: Removes a class or classes from each selected element.
toggleClass(classname: string): QeKitInstance: Toggles a class or classes on each selected element.
hasClass(classname: string): boolean: Checks if the class exists on all selected elements.
siblings(selector?: string): QeKitInstance: Returns a new QeKitInstance containing all sibling elements (optionally filtered by a selector).
on<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): QeKitInstance: Adds an event listener to each selected element.
off<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): QeKitInstance: Removes an event listener from each selected element.
trigger<T = any>(type: string | CustomEvent<T>, init?: CustomEventInit<T>): QeKitInstance: Triggers an event on each selected element, optionally passing an Event object (e.g., CustomEvent with data).
Native Element Methods: All native Element methods are available directly on the QeKitInstance.
Array Methods: All standard array methods (map, filter, forEach, reduce, some, every, find, findIndex) are chainable on the QeKitInstance.

Contributing

We 💛 issues.

When committing, please conform to the semantic-release commit standards. Please install commitizen and the adapter globally, if you have not already.

npm i -g commitizen cz-conventional-changelog

Now you can use git cz or just cz instead of git commit when committing. You can also use git-cz, which is an alias for cz.

git add . && git cz

License

GitHub

Published

Vulnerabilities

Links

Maintainers

Keywords

Readme

qekit

Installation

Usage

Contextual selection

Accessing elements by index and collection

Class manipulation

Siblings

Event handling

Native Element methods

Array methods

Chaining

API

qe()

Methods

Contributing

License

`qe()`