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js把数字金额转换成中文大写数字

实现效果：输入框失去焦点时，自动将输入框的数字金额转换为中文大写金额。

1.html

需要用到input框的onChange事件

<tr><th width="150"><span class="c_red">*</span>合同金额(元)：</th><td><input style="width: 200px;" data-options="required:true,missingMessage:'请输入金额',validType:'amount'" min="0" type="number" onChange="changeAmount()" class="easyui-validatebox" id="amount" name="amount" maxlength="80" /><span style="color: #009CFF;margin-left: 30px;" id="amountBig"></span></td>
</tr>

2.方法，可以直接复制使用

function changeNumMoneyToChinese(money) {var cnNums = new Array("零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"); //汉字的数字var cnIntRadice = new Array("", "拾", "佰", "仟"); //基本单位var cnIntUnits = new Array("", "万", "亿", "兆"); //对应整数部分扩展单位var cnDecUnits = new Array("角", "分", "毫", "厘"); //对应小数部分单位var cnInteger = "整"; //整数金额时后面跟的字符var cnIntLast = "元"; //整型完以后的单位var maxNum = 999999999999999.9999; //最大处理的数字var IntegerNum; //金额整数部分var DecimalNum; //金额小数部分var ChineseStr = ""; //输出的中文金额字符串var parts; //分离金额后用的数组，预定义var Symbol = ""; //正负值标记if (money == "") {return "";}money = parseFloat(money);if (money >= maxNum) {alert('超出最大处理数字');return "";}if (money == 0) {ChineseStr = cnNums[0] + cnIntLast + cnInteger;return ChineseStr;}if (money < 0) {money = -money;Symbol = "负 ";}money = money.toString(); //转换为字符串if (money.indexOf(".") == -1) {IntegerNum = money;DecimalNum = '';} else {parts = money.split(".");IntegerNum = parts[0];DecimalNum = parts[1].substr(0, 4);}if (parseInt(IntegerNum, 10) > 0) { //获取整型部分转换var zeroCount = 0;var IntLen = IntegerNum.length;for (var i = 0; i < IntLen; i++) {var n = IntegerNum.substr(i, 1);var p = IntLen - i - 1;var q = p / 4;var m = p % 4;if (n == "0") {zeroCount++;} else {if (zeroCount > 0) {ChineseStr += cnNums[0];}zeroCount = 0; //归零ChineseStr += cnNums[parseInt(n)] + cnIntRadice[m];}if (m == 0 && zeroCount < 4) {ChineseStr += cnIntUnits[q];}}ChineseStr += cnIntLast;//整型部分处理完毕}if (DecimalNum != '') { //小数部分var decLen = DecimalNum.length;for (var i = 0; i < decLen; i++) {var n = DecimalNum.substr(i, 1);if (n != '0') {ChineseStr += cnNums[Number(n)] + cnDecUnits[i];}}}if (ChineseStr == '') {ChineseStr += cnNums[0] + cnIntLast + cnInteger;} else if (DecimalNum == '') {ChineseStr += cnInteger;}ChineseStr = Symbol + ChineseStr;return ChineseStr;
}

3.使用

function changeAmount() {var amount = $('#amount').val()var money = changeNumMoneyToChinese(amount)$('#amountBig').html(money)
}