รบกวนสอบถามแนวคิดการใส่ค่าตัวเลขแล้วออกผลมาเป็นตัวหนังสือหน่อยครับ

function Text(Number)
{
	var TxtNumArr = new Array ("ศูนย์", "หนึ่ง", "สอง", "สาม", "สี่", "ห้า", "หก", "เจ็ด", "แปด", "เก้า", "สิบ");
	var TxtDigitArr = new Array ("", "สิบ", "ร้อย", "พัน", "หมื่น", "แสน", "ล้าน");
	var Text = "";

			if (Number[1].length > 0)
			{
				Number[1] = Number[1].substring(0, 2);
			}
			var NumberLen = Number[0].length - 0;
			for(var i = 0; i < NumberLen; i++)
			{
				var tmp = Number[0].substring(i, i + 1) - 0;
				if (tmp != 0)
				{
					if ((i == (NumberLen - 1)) && (tmp == 1))
					{
						Text += "เอ็ด";
					} else
					if ((i == (NumberLen - 2)) && (tmp == 2))
					{
						Text += "ยี่";
					} else
					if ((i == (NumberLen - 2)) && (tmp == 1))
					{
					 Text += "";
					} else
					{
					 Text += TxtNumArr[tmp];
					}
					Text += TxtDigitArr[NumberLen - i - 1];
				}
			}
		
			return Text;