JavaScript Web APIs Cheat Sheet (In progress…)
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Document/Element
Methods: selectors
querySelectorquerySelector(selector) // First element Documentation
querySelectorAllquerySelectorAll(selectors) // Array of elems. Documentation
Methods: create/modify
createElement()createElement(tag) Documentation
EventTarget
Methods
addEventListener()object.addEventListener(type,listener,options) Documentation
removeEventListener()object.removeEventListener(type,listener) Documentation
dispatchEvent()dispatchEvent(event) Documentation
Element
Properties
attributesArray Documentation
classListadd(), remove(), replace(), toggle() Documentation
classNameclassName, className = '…' Documentation
childrenArray Documentation
innerTextinnerText = '…' // HTMLElement Documentation
innerHTMLinnerHTML, innerHTML = '…' Documentation
outerHTMLouterHTML, outerHTML = '…' Documentation
remove()el.remove() Documentation
stylestyle.backgroundColor = "purple" Documentation
tagnametagname, tagname= Documentation
blur()el.blur() // HTMLElement Documentation
Methods
closestclosest(selector) // Traverses parents Documentation
getAttributegetAttribute(name) Documentation
setAttributesetAttribute(name, value) Documentation
getBoundingClientRect()el.getBoundingClientRect() Documentation
insertAdjacentElementinsertAdjacentElement(position, el)
// beforebegin,afterbegin,beforeend,afterend Documentation
// beforebegin,afterbegin,beforeend,afterend Documentation
insertAdjacentHTMLinsertAdjacentHTML(position, html)
// beforebegin,afterbegin,beforeend,afterend Documentation
// beforebegin,afterbegin,beforeend,afterend Documentation
HTMLFormElement
Methods
reset()Form element to default values Documentation
submit()Submits a form Documentation
Fetch API
Example
fetchconst p1 = fetch('http://…')
.then(resp => resp.json())
.then(data => data)
.catch(err => console.log(err)) Documentation
.then(resp => resp.json())
.then(data => data)
.catch(err => console.log(err)) Documentation