JS实现unicode和UTF-8之间的互相转换互转

有一设备，为短信网关。需将pc送过来的utf-8转换成unicode才能将内容通过短信发送出去，同样，接收到的短信为unicode编码，也许转换成utf-8才能在pc端软件显示出来。程序很简单，只是走了不少弯路:

//unicode为1个接收数据，串口收到的字符编码放在该数组中 
function unicodetoutf8(unicode) { 
  var uchar; 
  var utf8str = ""; 
  var i; 
  for(i=0; i<unicode.length;i+=2){      
    uchar = (unicode[i]<<8) | unicode[i+1];        //unicode为2字节编码，一次读入2个字节 
    utf8str = utf8str + string.fromcharcode(uchar);  //使用string.fromcharcode强制转换 
  } 
  return utf8str; 
} 
function utf8tounicode(strutf8) { 
  var i,j; 
  var ucode; 
  var temp = new array(); 
  for(i=0,j=0; i<strutf8.length; i++){ 
    ucode = strutf8.charcodeat(i); 
    if(ucode<0x100){         //ascii字符 
      temp[j++] = 0x00; 
      temp[j++] = ucode; 
    }else if(ucode<0x10000){ 
      temp[j++] = (ucode>>8)&0xff; 
      temp[j++] = ucode&0xff; 
    }else if(ucode<0x1000000){ 
      temp[j++] = (ucode>>16)&0xff; 
      temp[j++] = (ucode>>8)&0xff; 
      temp[j++] = ucode&0xff; 
    }else if(ucode<0x100000000){ 
      temp[j++] = (ucode>>24)&0xff; 
      temp[j++] = (ucode>>16)&0xff; 
      temp[j++] = (ucode>>8)&0xff; 
      temp[j++] = ucode&0xff; 
    }else{ 
      break; 
    } 
  } 
  temp.length = j; 
  return temp; 
} 

以上所述是小编给大家介绍的js实现unicode和utf-8之间的互相转换互转，希望对大家有所帮助