可以试一下如下代码，看看他们每个字符是否一样。

for (var index = 0; index < maccode.length; ++index) {
    console.log("char " + index + ": " + maccode.charCodeAt(index));
}
for (var index = 0; index < softcode.length; ++index) {
    console.log("char " + index + ": " + softcode.charCodeAt(index));
}