如何将Javascript字符串转换为八位字节/字符数组？

Question

我想知道如何将普通的Javascript字符串转换为八位字节/字符数组.就像你使用经典的C unsigned char数组一样.我正在使用Struct/JSPack库,需要从字符串中的数据中提取/解压缩一些值.

谢谢!

Answer 1

请参见String.charCodeAt.

var str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
var result = [];
for(var i = 0, length = str.length; i < length; i++) {
    var code = str.charCodeAt(i);
    // Since charCodeAt returns between 0~65536, simply save every character as 2-bytes
    result.push(code & 0xff00, code & 0xff);
}
alert(result);