select-coupon.js
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var $ = require('jquery'),
Handlebars = require('yoho.handlebars'),
ellipsis = require('mlellipsis'),
loading = require('../plugin/loading'),
tip = require('../plugin/tip');
var page = 1,
canGetCoupon = true,
isGetData;
var conponTmpl = Handlebars.compile($('#tmpl-coupon').html()),
conponNotAvaliableTmpl = Handlebars.compile($('#tmpl-coupon-not-avaliable').html());
ellipsis.init();
function getCouponDate() {
if (!canGetCoupon) {
return;
}
if (isGetData) {
return;
}
loading.showLoadingMask();
page += 1;
isGetData = true;
$.ajax({
type: 'POST',
url: '/home/couponData',
dataType: 'html',
data: {
statuss: status,
page: page
}
}).then(function(coupons) {
var notAvailableCoupons = [];
// 后端需要返回一个 coupons 列表，如下
// notAvailable 表示不可用的优惠券
coupons = [{
money: '99',
coupon_name: '满XX-减去吴悠右腿有益于有2222',
couponValidity: '20150129-20150430',
coupon_id: '22222'
}, {
money: '99',
coupon_name: '满XX-减去吴悠右腿有益于有2222',
couponValidity: '20150129-20150430',
coupon_id: '2222233'
}, {
money: '99',
coupon_name: 'NONO满XX-减去吴悠右腿有益于有2222',
couponValidity: '20150129-20150430',
coupon_id: '2222233',
notAvailable: 1
}];
// coupons 是个列表，如果不是列表，可能是服务器错误，这次翻页加载不算
if (!$.isArray(coupons)) {
page--;
return;
}
// 每页10张，当不足10张时，说明已经加载完
if (coupons.length < 10) {
canGetCoupon = false;
}
// 第一页张数为 0 ，显示优惠券为空
if (!coupons.length && page === 2) {
$('.select-coupon-page').html($('#tmpl-no-coupon').html());
return;
}
// 把不可用的优惠券分离出来
$.each(coupons, function(i, coupon) {
if (coupon.notAvailable) {
notAvailableCoupons.push(coupon);
}
});
if (notAvailableCoupons.length) {
$('.not-avaliable-coupon-line').show();
}
$('#coupon-list').append(conponTmpl({
coupons: coupons
}));
$('#coupon-list-not').append(conponNotAvaliableTmpl({
notAvailableCoupons: notAvailableCoupons
}));
window.rePosFooter();
}).fail(function() {
page -= 1;
tip.show('加载优惠券失败');
}).always(function() {
isGetData = false;
loading.hideLoadingMask();
});
}
getCouponDate();
$(window).scroll(function() {
if ($(window).scrollTop() + $(window).height() > $('body').height() * 0.9) {
getCouponDate();
}
});