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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>外卖AA付款计算</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="description" content="订餐AA计算;计算订餐后红包和配送费的占比计算;">
<meta name="keywords" content="外卖付款计算器;红包计算;优惠计算">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="assets/css/amazeui.min.css">
<link rel="stylesheet" href="assets/css/app.css">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<div class="header">
<div class="am-u-lg-6 am-u-md-8 am-u-sm-centered">
<h1>外卖AA付款计算</h1>
<p class="am-monospace">帮你计算订餐后每个人该给多少钱。红包按消费比例减免，配送费按消费比例增加，餐盒费平摊。 可能会有极小的误差（一毛钱）</p>
</div>
<hr>
</div>
<div class="am-g">
<div class="am-u-lg-6 am-u-md-8 am-u-sm-centered">
<form class="am-form ">
<fieldset>
<div class="am-form-group">
<label class="am-form-label">订餐人数：</label>
<select name="count" id="count" data-am-selected>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
</select>
<a href="javascript:;" id="custom" >自定义</a>
<input type="text" id="countCustom" pattern="[0-9]" style="display: none;" maxlength="2" max="50" placeholder="请输入人数（数字）">
</div>
<div class="am-form-group">
<label class="am-form-label">原金额(不包含餐盒费)：</label>
<div id="list">
<input type="text" name="item_0" placeholder="第1个人金额">
<input type="text" name="item_1" placeholder="第2个人金额">
</div>
</div>
<div class="am-form-group">
<label class="am-form-label">红包和满减优惠总金额：</label>
<input type="text" id="coupon" />
</div>
<div class="am-form-group">
<label class="am-form-label">配送费总金额：</label>
<input type="text" id="send" />
</div>
<div class="am-form-group">
<label class="am-form-label">餐盒费总金额：</label>
<input type="text" id="box" placeholder="" />
</div>
</fieldset>
<hr>
<fieldset>
<div class="am-form-group">
<button type="button" data-am-loading="{spinner: 'circle-o-notch', loadingText: '加载中...', resetText: '计算'}" class="am-btn am-btn-primary am-icon-play" id="submit"> 计算</button>
<button type="reset" data-am-loading="{spinner: 'circle-o-notch', loadingText: '加载中...', resetText: '重置'}" class="am-btn am-btn am-btn-default am-icon-repeat" id="repeat"> 重置</button>
</div>
</fieldset>
</form>
</div>
<div class="am-modal am-modal-no-btn" tabindex="-1" id="modal-result">
<div class="am-modal-dialog">
<div class="am-modal-hd">计算结果
<a href="javascript: void(0)" class="am-close am-close-spin" data-am-modal-close>×</a>
</div>
<div class="am-modal-bd" id="result">
</div>
</div>
</div>
<script src="assets/js/jquery.min.js"></script>
<script src="assets/js/amazeui.min.js"></script>
<script>
var countSelect = document.querySelector("#count"); //人数dom
var countCustom = document.querySelector("#countCustom");//人数自定义
var countEle = countCustom.style.display == "none" ? countSelect : countCustom;
var listEle = document.querySelector("#list"); //每人花费容器
var couponEle = document.querySelector("#coupon"); //优惠金额
var sendEle = document.querySelector("#send"); //配送费
var boxEle = document.querySelector("#box"); //餐盒费
var list = []; //存放每个人的容器；
var btn = document.querySelector("#submit");
var custom = document.querySelector("#custom");
var repeat = document.querySelector("#repeat");
custom.onclick = function(){
if(countSelect.nextElementSibling.style.display == "none"){
countSelect.nextElementSibling.style.display = "inline-block";
countCustom.style.display = "none";
}else{
countSelect.nextElementSibling.style.display = "none";
countCustom.style.display = "inline-block";
}
countEle = countCustom.style.display == "none" ? countSelect : countCustom;
}
btn.onclick = function() {
setListBefore();
setListAfter();
getTotalAfter();
formatResult();
$('#modal-result').modal();
}
repeat.onclick = function(){
countEle.value = 2;
$(countSelect).trigger('changed.selected.amui');
$(countCustom).trigger("change");
}
countSelect.onchange = function() {
var count = countSelect.value; //人数
formatList(count - 1); //格式化人数列表
}
countCustom.onchange = function() {
var count = parseInt(countCustom.value) || 2; //人数
formatList(count - 1); //格式化人数列表
}
function getTotal() {
//获取优惠前总金额
var _total = 0;
var count = countEle.value; //人数
for (var i = 0; i < count; i++) {
_total += parseFloat(list[i].before);
}
list['totalbefore'] = _total;
return _total;
}
function getTotalAfter() {
//获取优惠前总金额
var _total = 0;
var coupon = parseFloat(couponEle.value) || 0; //优惠金额
var send = parseFloat(sendEle.value) || 0; //配送费
var box = parseFloat(boxEle.value) || 0; //餐盒费
var count = countEle.value; //人数
for (var i = 0; i < count; i++) {
_total += parseFloat(list[i].before);
}
_total = _total + send + box - coupon;
list['totalafter'] = _total;
return _total;
}
function setListBefore() {
var count = countEle.value; //人数
for (var i = 0; i < count; i++) {
setItemBefore(i, document.querySelector("[name=item_" + i + "]").value);
}
return true;
}
function setItemBefore(idx, value) {
//设置每个人之前的金额数据
if (list[idx] == undefined) {
list[idx] = {};
}
list[idx].before = parseFloat(value) || 0;
}
function setItemAfter(idx, value) {
//设置每个人优惠后的金额数据
list[idx].after = parseFloat(value) || 0;
}
function formatList(count) {
//格式化人数列表
var str = "";
for (var i = 0; i <= count; i++) {
str += "<input type='text' placeholder='第" + (i + 1) + "个人金额' name='item_" + i + "' />";
}
listEle.innerHTML = str;
}
function getItemAfter(i) {
var coupon = parseFloat(couponEle.value) || 0; //优惠金额
var send = parseFloat(sendEle.value) || 0; //配送费
var box = parseFloat(boxEle.value) || 0; //餐盒费
var total = getTotal(); //优惠前总金额
var count = countEle.value; //人数
var itemBefore = list[i].before; //当前个人金额
var res = 0;
if (itemBefore == 0 && total == 0) {
return 0;
}
res = itemBefore - itemBefore / total * (coupon - send) + box/count;
return res;
}
function setListAfter() {
var count = countEle.value; //人数
for (var i = 0; i < count; i++) {
setItemAfter(i, getItemAfter(i));
}
return true;
}
function formatResult() {
var res = document.querySelector("#result"); //结果容器
var count = countEle.value; //人数
var str = "总应付："+list['totalafter']+"元";
for (var i = 0; i < count; i++) {
var price = parseFloat(list[i].after).toFixed(1);
str += "<div class='res-item'>第" + (i + 1) + "个人应付:" + price + "元</div>";
}
res.innerHTML = str;
}
</script>
<div style="display: none;">
<script type="text/javascript">var cnzz_protocol = (("https:" == document.location.protocol) ? " https://" : " http://");document.write(unescape("%3Cspan id='cnzz_stat_icon_1262802330'%3E%3C/span%3E%3Cscript src='" + cnzz_protocol + "s19.cnzz.com/stat.php%3Fid%3D1262802330%26show%3Dpic1' type='text/javascript'%3E%3C/script%3E"));</script>
</div>
</body>
</html>