load your world
There is 1 new feature to implement, JUST DO IT AND JOIN US!
- pack this plugin into a npm package.
If you have problems with this plugin, then just create an issue, and I will solve it as soon as possible.
click to experience （switch to mobile device in browser）
- Complete features: both support "pull-down-to-refresh" and "pull-up-to-load".
- Simple API: only need to provide your data-callback-function, the plugin will do the left.
- Configurable: you can specific the position where "refresh/load" will be triggered, the images that show up...But the default config already works well.
- Flexibility: "pull-down/pull-up" features can be "open/close" separately, and "pull-up-to-load" anamition can be added by yourself additionaly.
- Experience: in line with user's operating habits, strongly support multi-touch.
- iscroll5: high performance, small footprint, dependency free, multi-platform javascript scroller.
- jquery: make it much easier to use JavaScript on your website.
- use "CSS Transition" for "bounce animation".
- use "CSS Anamation" for "loading anamation".
- use IScroll5's "Scroll Event" for "pull-up-to-load"
- assign to jquery as a Static Function
- mobile-chrome
- safari
There is some tricks for IScroll5 codes, all modification listed below:
// NEW FEATURE:
// user can lock scroll Y for certain direction, used by pull-to-refresh-like scenarios
lockScrollUp: function() {
this.isScrollUpLocked = true;
},
unlockScrollUp: function() {
this.isScrollUpLocked = false;
},
////////////////////////////////////////
_move: function (e) {
...
deltaX = this.hasHorizontalScroll ? deltaX : 0;
deltaY = this.hasVerticalScroll ? deltaY : 0;
// NEW FEATURE:
// user can lock scroll Y for certain direction, used by pull-to-refresh-like scenarios
deltaY = deltaY < 0 && this.isScrollUpLocked ? 0 : deltaY;
...
- lockScrollUp: is used to prevent iscroll's from scrolling while the user pull up the "pull-down-to-refresh".
- unlockScrollUp: free the iscroll's scrolling-up lock.
- _move: if scroll-y direction is up and lockScrollUp is called before, then reset deltaY to ZERO.
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script src="iscroll.js"></script>
<script src="pullToRefresh.js"></script>
<link rel='stylesheet' type='text/css' href = 'pullToRefresh.css'>
<div id="container">
<div id="content"></div>
</div>
- scroll-bar will appear inside container, you should add CSS below for it:
- position: absolute/relative/fixed.
- height: any container can't have scroll-bar without a fixed height.
- content should hold your html, and the scroll-bar will appear when content is higher than container.
- this plugin doesn't need "id" attribute in container and content, it is just an example here.
var pullToRefresh = $.installPullToRefresh("#container", {
onRefresh: function(refreshDone) {
setTimeout(function() {
refreshDone();
}, 0)
},
onLoad: function(loadDone) {
setTimeout(function() {
loadDone();
}, 0);
},
// noRefresh: true,
// noLoad: true,
// pauseBound: 40,
// lowerBound: 80,
// loadImg: "load.png",
// pullImg: "pull.png",
// bottomHeight: 1,
});
- first param: the javascript dom object or query-string of container.
- second param: the config for plugin:
- onRefresh: callback when refresh is triggered, you may do ajax here to fill the latest data into "#content".
- onLoad: callback when load is triggered, you may do ajax here to append more data to "#content".
- noRefresh：set to true if you do not need "pull-down-to-refresh" featrue.
- noLoad：set to true if you do not need "pull-up-to-load" feature.
- pauseBound: the height where loading image stays while refreshing.
- lowerBound: the max height that user can pull down.
- loadImg: the url of refreshing image.
- pullImg: the url of pulling image.
- bottomHeight: the distance from content's bottom when "pull-up-to-load" will be triggered.
If you have updated the html in "#content" that changes the height of "#content" outside onRefresh/onLoad callback, you MUST do the following, otherwise the iscroll5-bar may occur a drawing error:
pullToRefresh.refresh();
You may need to load data for the first screen in app without user's touch, the following method will trigger a "pull-down-to-refresh" immediately:
pullToRefresh.triggerPull();
现在有一个待实现的功能，希望你加入一起搞定！
- 将插件打包成npm可用形式
如果你对插件使用过程有任何BUG与需求，请创建一个ISSUE，我会尽快回复与解决
点击体验 （选择手机模式）
- 完整的功能：同时支持"下拉刷新"，"上拉加载"
- 简单的接口：用户仅需提供数据回调函数，框架负责剩余任务
- 参数化配置：用户可自定义"下拉/上拉"的触发位置、图片等，但是默认值通常可以满足需求
- 灵活的设定："下拉/上拉"特性可独立"开启/关闭","上拉加载"特效交由用户订制
- 良好的体验：拖拽行为符合用户习惯，支持强大的多点触摸
- iscroll5：兼容各移动平台的滚动条方案
- jquery：高效跨平台的DOM操作
- 基于transition实现bounce回弹动画
- 基于anamation实现自旋loading加载动画
- 基于iscroll5滚动事件实现"上拉加载"
- 基于jquery静态函数实现为插件
参考鱼儿的博客
- 微信浏览器
- chrome移动浏览器
- safari浏览器
我为IScroll5打了一个小补丁, 所有的修改列举如下：
// NEW FEATURE:
// user can lock scroll Y for certain direction, used by pull-to-refresh-like scenarios
lockScrollUp: function() {
this.isScrollUpLocked = true;
},
unlockScrollUp: function() {
this.isScrollUpLocked = false;
},
////////////////////////////////////////
_move: function (e) {
...
deltaX = this.hasHorizontalScroll ? deltaX : 0;
deltaY = this.hasVerticalScroll ? deltaY : 0;
// NEW FEATURE:
// user can lock scroll Y for certain direction, used by pull-to-refresh-like scenarios
deltaY = deltaY < 0 && this.isScrollUpLocked ? 0 : deltaY;
...
- lockScrollUp: 当用户下拉刷新并将动画向反方向拉回的时候，阻止IScroll5跟随滚动
- unlockScrollUp: 解除对IScroll5的Y轴上拉锁定
- _move: 如果当前正在向上拉动Y轴，并且Y轴上拉已锁定，那么重置本次移动的deltaY为0
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script src="iscroll.js"></script>
<script src="pullToRefresh.js"></script>
<link rel='stylesheet' type='text/css' href = 'pullToRefresh.css'>
<div id="container">
<div id="content"></div>
</div>
- container内的区域将出现滚动条，需添加以下CSS：
- position：relative/absolute/fixed
- height：固定高度,才能出现滚动条
- content容纳内容，必须是container的唯一子元素
- 注：插件并不会依赖2个div的id属性, 这里仅仅为了演示用途
// 安装下拉刷新插件
var pullToRefresh = $.installPullToRefresh("#container", {
onRefresh: function(refreshDone) {
setTimeout(function() {
refreshDone();
}, 0)
},
onLoad: function(loadDone) {
setTimeout(function() {
loadDone();
}, 0);
},
// noRefresh: true,
// noLoad: true,
// pauseBound: 40,
// lowerBound: 80,
// loadImg: "load.png",
// pullImg: "pull.png",
// bottomHeight: 1,
});
- 第一个参数：container的节点Jquery选择语法或者dom对象
- 第二个参数：插件配置，所有内容列举如下：
- onRefresh：刷新回调函数，你应该在此发起ajax请求完整数据并覆盖到content内部，最后调用refreshDone通知插件完成
- onLoad：加载回调函数，你应该在此发起ajax请求增量数据并追加到content末尾，最后调用loadDone通知插件完成
- noRefresh：设置为true将禁止下拉刷新特性
- noLoad：设置为true将禁止上拉加载特性
- pauseBound： 刷新数据时loading图标的停留高度
- lowerBound： 下拉的最大高度
- loadImg：等待刷新图标的URL
- pullImg：下拉图标的URL
- bottomHeight：当距离内容底部小于该距离时触发上拉加载
如果你在onRefresh与onLoad之外更新了content里的内容，影响了其总高度，那么请主动发起如下重绘调用，否则可能导致滚动条绘制错误：
pullToRefresh.refresh();
app首屏通常需要异步获取数据，因此你可以通过下面的方式主动触发一次刷新，效果和手势滑动触发的刷新一致：
pullToRefresh.triggerPull();
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