function cssStyle2DomStyle(sName) {
const reg = /-\w/g
const matchArr = sName.match(reg)
matchArr.forEach((item) => {
sName = sName.replace(item, function (val, index) {
const splitArr = val.split('')
if (index === 0) {
return splitArr[1]
} else {
return splitArr[1].toUpperCase()
}
})
})
return sName
}
console.log(cssStyle2DomStyle('font-size'))