to-hankaku.js, to-zenkaku.js : 半角文字/全角文字をそれぞれ変換する

to-hankaku.js

/**
 * to-hankaku.js
 * convert to ascii code strings.
 *
 * @version 1.0.1
 * @author think49
 * @url https://gist.github.com/964592
 * @license http://www.opensource.org/licenses/mit-license.php (The MIT License)
 */

var toHankaku = (function (String, fromCharCode) {

  function toHankaku (string) {
    return String(string).replace(/\u2019/g, '\u0027').replace(/\u201D/g, '\u0022').replace(/\u3000/g, '\u0020').replace(/\uFFE5/g, '\u00A5').replace(/[\uFF01\uFF03-\uFF06\uFF08\uFF09\uFF0C-\uFF19\uFF1C-\uFF1F\uFF21-\uFF3B\uFF3D\uFF3F\uFF41-\uFF5B\uFF5D\uFF5E]/g, alphaNum);
  }

  function alphaNum (token) {
    return fromCharCode(token.charCodeAt(0) - 65248);
  }

  return toHankaku;
})(String, String.fromCharCode);

to-zenkaku.js

/**
 * to-zenkaku.js
 * convert to multi byte strings.
 *
 * @version 1.0.2
 * @author think49
 * @url https://gist.github.com/964592
 * @license http://www.opensource.org/licenses/mit-license.php (The MIT License)
 */

var toZenkaku = (function (String, fromCharCode) {

  function toZenkaku (string) {
    return String(string).replace(/\u0020/g, '\u3000').replace(/\u0022/g, '\u201D').replace(/\u0027/g, '\u2019').replace(/\u00A5/g, '\uFFE5').replace(/[!#-&(),-9\u003C-?A-[\u005D_a-{}~]/g, alphaNum);
  }

  function alphaNum (token) {
    return fromCharCode(token.charCodeAt(0) + 65248);
  }

  return toZenkaku;
})(String, String.fromCharCode);

• format-hankaku-zenkaku.js - Ideone.com
• 半角から全角文字列へ - babu_babu_babooのごみ箱