js 瀏覽器相容css中webkit、Moz、O、ms...寫法封裝(es6語法)

/**
*瀏覽器相容寫法封裝
*/
let elementStyle = document.createElement('div').style

let vendor = (() => {
  let transformNames = {
    webkit: 'webkitTransform',
    Moz: 'MozTransform',
    O: 'OTransform',
    ms: 'msTransform',
    standard: 'transform'
  }

  for (let key in transformNames) {
    if (elementStyle[transformNames[key]] !== undefined) {
      return key
    }
  }

  return false
})()

export function prefixStyle(style) {
  if (vendor === false) {
    return false
  }

  if (vendor === 'standard') {
    return style
  }

  return vendor + style.charAt(0).toUpperCase() + style.substr(1)
}

//調用

const transform = prefixStyle('transform')
const backdrop = prefixStyle('backdrop-filter')

div.style[transform] = `translate3d(0,0,0)` 等同於  div.style['transform'] = `translate3d(0,0,0)`

div.style[backdrop] = `blur(4px)`等同於  div.style['backdrop'] = `blur(4px)`