This code is from https://github.com/liuxiaodong/encodeToGb2312

You can use like:

var r###lt = encodeToGb2312("字符串转GB2312");
r###lt:  D7D6B7FBB4AED7AA474232333132

var r###lt = encodeToGb2312("字符串转GB2312",true);
r###lt:  %D7%D6%B7%FB%B4%AE%D7%AA%47%42%32%33%31%32