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iscroll.js 学习笔记
1.0 什么是iscroll.js?
就是一个Javascript 库,或者说是一个JQuery 插件,能在手机端实现下拉刷新,滚动翻页,双指放大缩小等特效。
可以模拟原生iOS应用里的滚动列表操作。
下载地址:https://github.com/cubiq/iscroll/
2.0为什么要用iscroll.js ?
css属性overflow:scroll在ios5之前是不支持的,所以可以通过这个插件来在所有浏览器上支持这种滚动。
3.0如何使用iscroll,js?
直接看demo:
https://github.com/cubiq/iscroll/tree/master/demos。
简单来说就是
1.引入iscroll.js, 定义myScroll,内容里面div 父id写wrapper,子写scroller
<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0"><title>iScroll demo: scroll to element</title><script type="text/javascript" src="iscroll.js"></script><script type="text/javascript">var myScroll;function loaded () { myScroll = new IScroll(‘#wrapper‘, { mouseWheel: true, click: true });}document.addEventListener(‘touchmove‘, function (e) { e.preventDefault(); }, false);</script><style type="text/css">* { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box;}html { -ms-touch-action: none;}body,ul,li { padding: 0; margin: 0; border: 0;}body { font-size: 12px; font-family: ubuntu, helvetica, arial; overflow: hidden; /* this is important to prevent the whole page to bounce */}#header { position: absolute; z-index: 2; top: 0; left: 0; width: 100%; height: 45px; line-height: 45px; background: #CD235C; padding: 0; color: #eee; font-size: 20px; text-align: center; font-weight: bold;}#footer { position: absolute; z-index: 2; bottom: 0; left: 0; width: 100%; height: 48px; background: #444; padding: 0; border-top: 1px solid #444;}#wrapper { position: absolute; z-index: 1; top: 45px; bottom: 48px; left: 0; width: 100%; background: #ccc; overflow: hidden;}#scroller { position: absolute; z-index: 1; -webkit-tap-highlight-color: rgba(0,0,0,0); width: 100%; -webkit-transform: translateZ(0); -moz-transform: translateZ(0); -ms-transform: translateZ(0); -o-transform: translateZ(0); transform: translateZ(0); -webkit-touch-callout: none; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; -webkit-text-size-adjust: none; -moz-text-size-adjust: none; -ms-text-size-adjust: none; -o-text-size-adjust: none; text-size-adjust: none;}#scroller ul { 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;}</style></head><body onload="loaded()"><div id="header">iScroll</div><div id="wrapper"> <div id="scroller"> <ul> <li><a href="javascript:myScroll.scrollToElement(document.querySelector(‘#scroller li:nth-child(10)‘))">Scroll to element 10</a></li> <li>Pretty row 2</li> <li>Pretty row 3</li> <li>Pretty row 4</li> <li>Pretty row 5</li> <li>Pretty row 6</li> <li>Pretty row 7</li> <li>Pretty row 8</li> <li>Pretty row 9</li> <li><a href="javascript:myScroll.scrollToElement(document.querySelector(‘#scroller li:nth-child(25)‘), null, null, true)">Center element 25 to screen</a></li> <li>Pretty row 11</li> <li>Pretty row 12</li> <li>Pretty row 13</li> <li>Pretty row 14</li> <li>Pretty row 15</li> <li>Pretty row 16</li> <li>Pretty row 17</li> <li>Pretty row 18</li> <li>Pretty row 19</li> <li>Pretty row 20</li> <li>Pretty row 21</li> <li>Pretty row 22</li> <li>Pretty row 23</li> <li>Pretty row 24</li> <li><a href="javascript:myScroll.scrollToElement(document.querySelector(‘#scroller li:nth-child(50)‘), 1200, null, null, IScroll.utils.ease.elastic)">Scroll to the last element with elastic easing</a></li> <li>Pretty row 26</li> <li>Pretty row 27</li> <li>Pretty row 28</li> <li>Pretty row 29</li> <li>Pretty row 30</li> <li>Pretty row 31</li> <li>Pretty row 32</li> <li>Pretty row 33</li> <li>Pretty row 34</li> <li>Pretty row 35</li> <li>Pretty row 36</li> <li>Pretty row 37</li> <li>Pretty row 38</li> <li>Pretty row 39</li> <li>Pretty row 40</li> <li>Pretty row 41</li> <li>Pretty row 42</li> <li>Pretty row 43</li> <li>Pretty row 44</li> <li>Pretty row 45</li> <li>Pretty row 46</li> <li>Pretty row 47</li> <li>Pretty row 48</li> <li>Pretty row 49</li> <li>Pretty row 50</li> </ul> </div></div><div id="footer"></div></body></html>
wrapper翻译是包装,理解为容器
scroller翻译是卷纸,理解为滚动条
position: absolute; 绝对定位 :
父级没有position,就以浏览器左上角为原始点进行
父级有position的话,就以父级的左上角来进行定位
position:relative; 相对定位 :
以父级的内容左上角来进行定位,
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每次写网页最好都在meta 标签里面添加一个
<meta http-equiv="pragma" content="no-cache"/>
用来清理缓存
iscroll.js 学习笔记
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