十六进制转十进制
function demo(hex) {
// 传入"0d 7f", 翻转去除空格"0d7f",
let str = hex.substring(2,4)+hex.substring(0,2);
console.log("翻转的值:", hex);
let decimalism = str.replace(/\s/g,"");
console.log("去除空格: ", decimalism);
let res = parseInt(decimalism, 16)/ 6553.5
console.log("16转10的值: ", res);
return res
}
demo('0d 7f')