JarCastingdom-helpers
tiny modular DOM lib for ie9+
Install
npm i -S dom-helpers
Mostly just naive wrappers around common DOM API inconsistencies, Cross browser work is minimal and mostly taken from jQuery. This library doesn't do a lot to normalize behavior across browsers, it mostly seeks to provide a common interface, and eliminate the need to write the same damn if (ie9) statements in every project.
For example on() works in all browsers ie9+ but it uses the native event system so actual event oddities will continue to exist. If you need robust cross-browser support, use jQuery. If you are just tired of rewriting:
if (document.addEventListener)
return (node, eventName, handler, capture) =>
node.addEventListener(eventName, handler, capture || false)
else if (document.attachEvent)
return (node, eventName, handler) =>
node.attachEvent('on' + eventName, handler)
over and over again, or you need a ok getComputedStyle polyfill but don't want to include all of jQuery, use this.
dom-helpers does expect certain, polyfillable, es5 features to be present for which you can use es5-shim where needed
The real advantage to this collection is that any method can be required individually, meaning bundlers like webpack will only include the exact methods you use. This is great for environments where jQuery doesn't make sense, such as React where you only occasionally need to do direct DOM manipulation.
All methods are exported as a flat namesapce
var helpers = require('dom-helpers')
var offset = require('dom-helpers/offset')
// style is a function
require('dom-helpers/css')(node, { width: '40px' })
- dom-helpers
ownerDocument(element): returns the element's document ownerownerWindow(element): returns the element's document windowactiveElement: return focused element safelyquerySelectorAll(element, selector): optimized qsa, usesgetElementBy{Id|TagName|ClassName}if it can.contains(container, element)height(element, useClientHeight)width(element, useClientWidth)matches(element, selector)offset(element)->{ top: Number, left: Number, height: Number, width: Number}offsetParent(element): return the parent node that the element is offset fromposition(element, [offsetParent]: return "offset" of the node to its offsetParent, optionally you can specify the offset parent if different than the "real" onescrollTop(element, [value])scrollLeft(element, [value])scrollParent(element)addClass(element, className)removeClass(element, className)hasClass(element, className)toggleClass(element, className)style(element, propName)orstyle(element, objectOfPropValues)getComputedStyle(element)->getPropertyValue(name)animate(node, properties, duration, easing, callback)programmatically start css transitionstransitionEnd(node, handler, [duration], [padding])listens for transition end, and ensures that the handler if called even if the transition fails to fire its end event. Will attempt to read duration from the element, otherwise one can be providedaddEventListener(node, eventName, handler, [options]):removeEventListener(node, eventName, handler, [options]):listen(node, eventName, handler, [options]): wrapsaddEventlistenerand returns a function that callsremoveEventListenerfor youfilter(selector, fn): returns a function handler that only fires when the target matches or is contained in the selector ex:on(list, 'click', filter('li > a', handler))requestAnimationFrame(cb)returns an ID for cancelingcancelAnimationFrame(id)scrollbarSize([recalc])returns the scrollbar's width size in pixelsscrollTo(element, [scrollParent])
