let obj = {}

        let str = "aa占比:17.48%,aa计费占比:0.00%"

        let arr = str.split(',')  // ['aa占比:17.48%','aa计费占比:0.00%']

        arr.forEach(item => {

            let [key,value] = item.split(':')

            obj[key] = value

        })

        console.log(obj)  //{aa占比: '17.48%', aa计费占比: '0.00%'}

        console.log(Object.keys(obj)) // ['aa占比', 'aa计费占比']

        console.log(Object.values(obj)) //['17.48%', '0.00%']