chinese-parseint.js

var chinese_parseInt = (function(){
  var chars = {
	"０": 0, "零": 0, "○": 0, "〇": 0, "洞": 0,
	"１": 1, "一": 1, "壹": 1, "ㄧ": 1, "弌": 1, "么": 1,
	"２": 2, "二": 2, "貳": 2, "贰": 2, "弍": 2, "兩": 2, "两": 2,
	"３": 3, "三": 3, "參": 3, "叁": 3, "弎": 3, "参": 3, "叄": 3,
	"４": 4, "四": 4, "肆": 4, "䦉": 4,
	"５": 5, "五": 5, "伍": 5,
	"６": 6, "六": 6, "陸": 6,
	"７": 7, "七": 7, "柒": 7,
	"８": 8, "八": 8, "捌": 8,
	"９": 9, "九": 9, "玖": 9,
	"十": 10, "拾": 10,
	"百": 100, "佰": 100,
	"千": 1000, "仟": 1000,
	"廿": 20,
	"卅": 30, "卌": 40, "皕": 200,
	"萬": 1e+4, "万": 1e+4,
	"億": 1e+8, "亿": 1e+8
  };

  var main = function(str, radix) {
	var result = parseInt(str, radix);
	if(!isNaN(result)) return result;
	if(typeof str !== "string") return NaN;

	str = str.replace(/[\s　]+/g, "");
	var negative = /^[負负-]/.test(str);
	if(negative) str = str.substr(1);

	result = 0;
	var partialSum = 0; ///< 不到一萬的部分
	var digit = -1;     ///< 個位數，預設為 -1 以區分有無"零"的出現

	for(var i = 0; i < str.length; ++i) {
		var charVal = chars[str.charAt(i)]; ///< 暫存字元代表的數值
		if(charVal === undefined) return NaN; // 有任何不認得的字，直接 NaN
		if(charVal < 10) {
			digit = (digit == -1)
				? charVal
				: digit * 10 + charVal  // ex. 零五、二五六萬
			;
		}
		else if(charVal < 1e+4) {
			if(digit == -1) digit = 1;
			if(i > 1 && digit == 0 && chars[str.charAt(i-2)] != 100)
				digit = 1; // 處理"一千零十一"；搜尋"千零十"的確是出現過的。
			partialSum += digit * charVal;
			digit = -1;
		}
		else {
			if(digit != -1) partialSum += digit;
			if(i && chars[str.charAt(i-1)] >= 1e+4) // 為了"四萬萬五千萬"
				result *= chars[str.charAt(i)];
			else result += partialSum * charVal;
			partialSum = 0;
			digit = -1;
		}
	}
	if(digit > 0) {
		if(str.length > 1) {  // 為了處理"二十四萬二"、"二百五"等
			charVal = chars[str.charAt(str.length - 2)];
			if(charVal < 100) partialSum += digit;
			else {
				charVal /= charVal.toString().charAt(0);  // 把「皕」轉成100
				partialSum += digit * (charVal / 10);
			}
		}
		else partialSum += digit;
	}
	result += partialSum;

	if(negative) result *= -1;
	return result;
  };

  main.characters = chars;
  return main;
})();

if(typeof module === 'object') module.exports = chinese_parseInt;