1、引入iscroll和jquery-1.8.3.min.js
<!-- 第三方的插件 可以实现上拉加载下拉刷-->
<script type="application/javascript" src="iscroll.js"></script>
<!-- 第三方插件 jquery -->
<script type="application/javascript" src="js/jquery.min.js"></script>
2、编写HTML
<div id="wrapper">
<div id="scroller">
<!-- 下拉刷新 -->
<div id="pullDown"><span class="pullDownIcon"></span><span class="pullDownLabel">下拉刷新...</span></div>
<!-- ；列表数据 -->
<ul id="thelist">
<div class="show_food_list">
<div class="show_img">
<img src="images/fd_banner.jpg" alt="" />
</div>
<h4>东波四珍之一 ———— 东波肉2</h4>
<div class="show_data_list">
<div class="food_data">
<img src="images/dianzan.png" alt="" />
<span>1233</span>
</div>
<div class="food_data">
<img src="images/dianzan.png" alt="" />
<span>1233</span>
</div>
<div class="food_data">
<img src="images/dianzan.png" alt="" />
<span>1233</span>
</div>
</div>
</div>
</ul>
<!-- 上拉加载更多 -->
<div id="pullUp"><span class="pullUpIcon"></span><span class="pullUpLabel">上拉加载更多...</span></div>
</div>
</div>
3、编写CSS，为HTML赋予样式
body,
ul,
li {
padding: 0;
margin: 0;
border: 0;
}
body {
font-size: 12px;
-webkit-user-select: none;
-webkit-text-size-adjust: none;
font-family: helvetica;
}
#header {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 45px;
line-height: 45px;
background-image: -webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #fe96c9), color-stop(0.05, #d51875), color-stop(1, #7b0a2e));
background-image: -moz-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);
background-image: -o-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);
padding: 0;
color: #eee;
font-size: 20px;
text-align: center;
}
#header a {
color: #f3f3f3;
text-decoration: none;
font-weight: bold;
text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.5);
}
#footer {
position: absolute;
bottom: 0;
left: 0;
width: 100%;
height: 48px;
background-image: -webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #999), color-stop(0.02, #666), color-stop(1, #222));
background-image: -moz-linear-gradient(top, #999, #666 2%, #222);
background-image: -o-linear-gradient(top, #999, #666 2%, #222);
padding: 0;
border-top: 1px solid #444;
}
#wrapper {
position: absolute;
z-index: 1;
top: 45px;
bottom: 48px;
left: 0;
width: 100%;
background: #555;
overflow: auto;
background: white;
}
#scroller {
position: relative;
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
float: left;
width: 100%;
padding: 0;
}
#scroller ul {
position: relative;
list-style: none;
padding: 0;
margin: 0;
width: 100%;
text-align: left;
}
#scroller li {
padding: 0 10px;
height: 40px;
line-height: 40px;
border-bottom: 1px solid #ccc;
border-top: 1px solid #fff;
background-color: #fafafa;
font-size: 14px;
}
#scroller li > a {
display: block;
}
/**
*
* 下拉样式 Pull down styles
*
*/
#pullDown,
#pullUp {
background: #fff;
height: 40px;
line-height: 40px;
padding: 5px 10px;
border-bottom: 1px solid #ccc;
font-weight: bold;
font-size: 14px;
color: #888;
}
#pullDown .pullDownIcon,
#pullUp .pullUpIcon {
display: block;
float: left;
width: 40px;
height: 40px;
-webkit-background-size: 40px 80px;
background-size: 40px 80px;
-webkit-transition-property: -webkit-transform;
-webkit-transition-duration: 250ms;
}
#pullDown .pullDownIcon {
-webkit-transform: rotate(0deg) translateZ(0);
}
#pullUp .pullUpIcon {
-webkit-transform: rotate(-180deg) translateZ(0);
}
/* 菜单列表 */
.show_food_list {
width: 100%;
}
.show_food_list .show_img {
height: 9rem;
width: 17.5rem;
border-radius: 0.5rem;
background: red;
margin: 0 auto;
overflow: hidden;
margin-top: 0.5rem;
}
.show_food_list img {
height: 9rem;
width: 17.5rem;
text-align: center;
}
.show_food_list h4 {
font-size: 0.7rem;
text-align: center;
line-height: 2rem;
}
.show_data_list {
display: flex;
justify-content: space-between;
padding: 0 3.5rem;
}
.show_data_list img {
width: 0.75rem;
height: 0.75rem;
}
.show_data_list .food_data span {
border-right: 1px solid #999;
padding: 0 0.6rem 0 0.2rem;
color: #999;
}
4、调用iScroll
var myScroll,
pullDownEl,
pullDownOffset,
pullUpEl,
pullUpOffset,
generatedCount = 0;
/**
* 下拉刷新 （自定义实现此方法）
* myScroll.refresh(); // 数据加载完成后，调用界面更新方法
*/
var pullUpIndex = 0; // 设置初始值 （我设置了了pullUpIndex=3的时候不可以上拉加载）
// 上拉重新加载页面
function pullDownAction() {
// 这里写通过ajax 后台后台数据渲染到页面
setTimeout(function () {
// <-- Simulate network congestion, remove setTimeout from production!
var el, li, i;
el = document.getElementById("thelist");
var result = "";
for (i = 0; i < 2; i++) {
result += `<div class="show_food_list">
<div class="show_img">
<img src="images/fd_banner.jpg" alt="">
</div>
<h4>东波四珍之一 ———— 东波肉2</h4>
<div class="show_data_list">
<div class="food_data">
<img src="images/dianzan.png" alt="">
<span>1233</span>
</div>
<div class="food_data">
<img src="images/dianzan.png" alt="">
<span>1233</span>
</div>
<div class="food_data">
<img src="images/dianzan.png" alt="">
<span>1233</span>
</div>
</div>
</div>`;
}
pullUpIndex = 0;
$("#thelist").html(result);
pullUpEl.querySelector(".pullUpLabel").innerHTML = "";
myScroll.refresh(); //数据加载完成后，调用界面更新方法 Remember to refresh when contents are loaded (ie: on ajax completion)
}, 1000); // <-- Simulate network congestion, remove setTimeout from production!
}
/**
* 滚动翻页 （自定义实现此方法）
* myScroll.refresh(); // 数据加载完成后，调用界面更新方法
*/
// 上拉加载更多
function pullUpAction() {
// 这里写通过ajax 后台后台数据渲染到页面
setTimeout(function () {
// <-- Simulate network congestion, remove setTimeout from production!
var el, li, i;
el = document.getElementById("thelist");
var result = "";
for (i = 0; i < 4; i++) {
result += `<div class="show_food_list">
<div class="show_img">
<img src="images/fd_banner.jpg" alt="">
</div>
<h4>东波四珍之一 ———— 东波肉2</h4>
<div class="show_data_list">
<div class="food_data">
<img src="images/dianzan.png" alt="">
<span>1233</span>
</div>
<div class="food_data">
<img src="images/dianzan.png" alt="">
<span>1233</span>
</div>
<div class="food_data">
<img src="images/dianzan.png" alt="">
<span>1233</span>
</div>
</div>
</div>`;
}
$("#thelist").append(result);
myScroll.refresh(); // 数据加载完成后，调用界面更新方法 Remember to refresh when contents are loaded (ie: on ajax completion)
}, 1000); // <-- Simulate network congestion, remove setTimeout from production!
}
/**
* 初始化iScroll控件
*/
function loaded() {
pullDownEl = document.getElementById("pullDown");
pullDownOffset = pullDownEl.offsetHeight;
pullUpEl = document.getElementById("pullUp");
pullUpOffset = pullUpEl.offsetHeight;
myScroll = new iScroll("wrapper", {
scrollbarClass: "myScrollbar" /* 重要样式 */,
useTransition: false /* 此属性不知用意，本人从true改为false */,
topOffset: pullDownOffset,
// 拖动幅度比较小时候出发的方法
onRefresh: function () {
if (pullDownEl.className.match("loading")) {
pullDownEl.className = "";
pullDownEl.querySelector(".pullDownLabel").innerHTML = "下拉刷新...";
} else if (pullUpEl.className.match("loading")) {
pullUpEl.className = "";
pullUpEl.querySelector(".pullUpLabel").innerHTML = "上拉加载更多...";
}
},
// 拖动距离比较大的出发的方法
onScrollMove: function () {
if (this.y > 5 && !pullDownEl.className.match("flip")) {
pullDownEl.className = "flip";
pullDownEl.querySelector(".pullDownLabel").innerHTML = "松手开始更新...";
this.minScrollY = 0;
} else if (this.y < 5 && pullDownEl.className.match("flip")) {
pullDownEl.className = "";
pullDownEl.querySelector(".pullDownLabel").innerHTML = "下拉刷新...";
this.minScrollY = -pullDownOffset;
} else if (this.y < this.maxScrollY - 5 && !pullUpEl.className.match("flip")) {
pullUpEl.className = "flip";
pullUpEl.querySelector(".pullUpLabel").innerHTML = "松手开始更新...";
this.maxScrollY = this.maxScrollY;
} else if (this.y > this.maxScrollY + 5 && pullUpEl.className.match("flip")) {
pullUpEl.className = "";
pullUpEl.querySelector(".pullUpLabel").innerHTML = "上拉加载更多...";
this.maxScrollY = pullUpOffset;
}
},
// 放手后的方法
onScrollEnd: function () {
if (pullDownEl.className.match("flip")) {
pullDownEl.className = "loading";
pullDownEl.querySelector(".pullDownLabel").innerHTML = "加载中...";
pullDownAction(); // Execute custom function (ajax call?)
} else if (pullUpEl.className.match("flip")) {
pullUpIndex++;
console.log(pullUpIndex);
pullUpEl.className = "loading";
if (pullUpIndex < 3) {
pullUpEl.querySelector(".pullUpLabel").innerHTML = "加载中...";
pullUpAction(); // Execute custom function (ajax call?)
} else {
pullUpEl.querySelector(".pullUpLabel").innerHTML = "数据已全部加载完毕";
}
}
}
});
setTimeout(function () {
document.getElementById("wrapper").style.left = "0";
}, 800);
}
//初始化绑定iScroll控件
document.addEventListener(
"touchmove",
function (e) {
e.preventDefault();
},
false
);
document.addEventListener("DOMContentLoaded", loaded, false);
参考文献
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