JS全角与半角转化实例(分享)

function ToCDB(str) {
    var tmp = "";
    for (var i = 0; i < str.length; i++) {
      if (str.charCodeAt(i) > 65248 && str.charCodeAt(i) < 65375) {
        tmp += String.fromCharCode(str.charCodeAt(i) - 65248);
      }
      else {
        tmp += String.fromCharCode(str.charCodeAt(i));
      }
    }
    return tmp
  }

function ToDBC(txtstring) {
    var tmp = "";
    for (var i = 0; i < txtstring.length; i++) {
      if (txtstring.charCodeAt(i) == 32) {
        tmp = tmp + String.fromCharCode(12288);
      }
      if (txtstring.charCodeAt(i) < 127) {
        tmp = tmp + String.fromCharCode(txtstring.charCodeAt(i) + 65248);
      }
    }
    return tmp;
  }