题解 | #颜色字符串转换#

function rgb2hex(sRGB) {
        // 填写JavaScript
            if(!sRGB.includes('rgb')){
                return sRGB
            }
            let str=sRGB.slice(4,sRGB.length-1)
            let arr=str.split(',')
            let result='#'
            for(let i=0;i<arr.length;i++){
                let res = parseInt(arr[i]).toString(16);
                //if (res.length <2) {
                   // res=res.padStart(2, "0");
                //}
                result = result +( res.length<2?'0'+res:res);
            }
            return result
        }