[js] 瀑布流
#主要是PC端，mobile端使用需要稍微修改
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
html,
body,
ul,
li {
border: 0;
margin: 0;
padding: 0;
}
ul {
height: 1000px;
background: lightblue;
list-style: none;
}
li {
box-sizing: border-box;
background: lemonchiffon;
border: 1px solid black;
width: 25%;
float: left;
height: 500px;
}
</style>
</head>
<body>
<ul id="a">
<li>0</li>
<li>1</li>
<li>2</li>
<li>3</li>
<li id="load" style="display:none;width: 100%;text-align: center;height: auto;background: lightcoral;">数据加载中...</li>
<li id="end" style="display:none;width: 100%;text-align: center;height: auto;background:lightpink;">没有更多啦</li>
</ul>
<script>
var client = function() {
//rendering engines
var engine = {
ie: 0,
gecko: 0,
webkit: 0,
khtml: 0,
opera: 0,
//complete version
ver: null
};
//browsers
var browser = {
//browsers
ie: 0,
firefox: 0,
safari: 0,
konq: 0,
opera: 0,
chrome: 0,
//specific version
ver: null
};
//platform/device/OS
var system = {
win: false,
mac: false,
x11: false,
//mobile devices
iphone: false,
ipod: false,
ipad: false,
ios: false,
android: false,
nokiaN: false,
winMobile: false,
//game systems
wii: false,
ps: false
};
//detect rendering engines/browsers
var ua = navigator.userAgent;
if (window.opera) {
engine.ver = browser.ver = window.opera.version();
engine.opera = browser.opera = parseFloat(engine.ver);
} else if (/AppleWebKit\/(\S+)/.test(ua)) {
engine.ver = RegExp["$1"];
engine.webkit = parseFloat(engine.ver);
//figure out if it's Chrome or Safari
if (/Chrome\/(\S+)/.test(ua)) {
browser.ver = RegExp["$1"];
browser.chrome = parseFloat(browser.ver);
} else if (/Version\/(\S+)/.test(ua)) {
browser.ver = RegExp["$1"];
browser.safari = parseFloat(browser.ver);
} else {
//approximate version
var safariVersion = 1;
if (engine.webkit < 100) {
safariVersion = 1;
} else if (engine.webkit < 312) {
safariVersion = 1.2;
} else if (engine.webkit < 412) {
safariVersion = 1.3;
} else {
safariVersion = 2;
}
browser.safari = browser.ver = safariVersion;
}
} else if (/KHTML\/(\S+)/.test(ua) || /Konqueror\/([^;]+)/.test(ua)) {
engine.ver = browser.ver = RegExp["$1"];
engine.khtml = browser.konq = parseFloat(engine.ver);
} else if (/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)) {
engine.ver = RegExp["$1"];
engine.gecko = parseFloat(engine.ver);
//determine if it's Firefox
if (/Firefox\/(\S+)/.test(ua)) {
browser.ver = RegExp["$1"];
browser.firefox = parseFloat(browser.ver);
}
} else if (/MSIE ([^;]+)/.test(ua)) {
engine.ver = browser.ver = RegExp["$1"];
engine.ie = browser.ie = parseFloat(engine.ver);
}
//detect browsers
browser.ie = engine.ie;
browser.opera = engine.opera;
//detect platform
var p = navigator.platform;
system.win = p.indexOf("Win") == 0;
system.mac = p.indexOf("Mac") == 0;
system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);
//detect windows operating systems
if (system.win) {
if (/Win(?:dows )?([^do]{2})\s?(\d+\.\d+)?/.test(ua)) {
if (RegExp["$1"] == "NT") {
switch (RegExp["$2"]) {
case "5.0":
system.win = "2000";
break;
case "5.1":
system.win = "XP";
break;
case "6.0":
system.win = "Vista";
break;
case "6.1":
system.win = "7";
break;
default:
system.win = "NT";
break;
}
} else if (RegExp["$1"] == "9x") {
system.win = "ME";
} else {
system.win = RegExp["$1"];
}
}
}
//mobile devices
system.iphone = ua.indexOf("iPhone") > -1;
system.ipod = ua.indexOf("iPod") > -1;
system.ipad = ua.indexOf("iPad") > -1;
system.nokiaN = ua.indexOf("NokiaN") > -1;
//windows mobile
if (system.win == "CE") {
system.winMobile = system.win;
} else if (system.win == "Ph") {
if (/Windows Phone OS (\d+.\d+)/.test(ua)) {;
system.win = "Phone";
system.winMobile = parseFloat(RegExp["$1"]);
}
}
//determine iOS version
if (system.mac && ua.indexOf("Mobile") > -1) {
if (/CPU (?:iPhone )?OS (\d+_\d+)/.test(ua)) {
system.ios = parseFloat(RegExp.$1.replace("_", "."));
} else {
system.ios = 2; //can't really detect - so guess
}
}
//determine Android version
if (/Android (\d+\.\d+)/.test(ua)) {
system.android = parseFloat(RegExp.$1);
}
//gaming systems
system.wii = ua.indexOf("Wii") > -1;
system.ps = /playstation/i.test(ua);
//return it
return {
engine: engine,
browser: browser,
system: system
};
}();
var QM = (function() {
var exports = {};
function scrollToBottom(func) {
/**
* @author qingming
*/
var cHeight, sHeight, sTop;
if (client.browser.firefox) {
window.addEventListener('DOMMouseScroll', function(event) {
if (event.detail) {
if (document.compatMode == "BackCompat") {
cHeight = document.body.clientHeight;
sHeight = document.body.scrollHeight;
} else {
cHeight = document.documentElement.clientHeight;
sHeight = document.documentElement.scrollHeight;
}
sTop = document.documentElement.scrollTop == 0 ? document.body.scrollTop : document.documentElement.scrollTop;
sTop = Math.ceil(sTop);
if (sTop + cHeight == sHeight) {
func();
}
}
})
} else {
window.addEventListener('wheel', function(event) {
if (event.wheelDelta < 0) {
if (document.compatMode == "BackCompat") {
cHeight = document.body.clientHeight;
sHeight = document.body.scrollHeight;
} else {
cHeight = document.documentElement.clientHeight;
sHeight = document.documentElement.scrollHeight;
}
sTop = document.documentElement.scrollTop == 0 ? document.body.scrollTop : document.documentElement.scrollTop;
sTop = Math.ceil(sTop);
if (sTop + cHeight == sHeight) {
func();
}
}
})
}
}
exports.scrollToBottom = scrollToBottom;
return exports;
})();
var num = 0;
var a = document.getElementById("a");
var load = document.getElementById("load"),
end = document.getElementById("end");
QM.scrollToBottom(function() {
if (num < 10) {
load.style.display = 'block';
num += 4;
load.insertAdjacentHTML("beforeBegin", '<li>' + num + '</li><li>' + (num + 1) + '</li><li>' + (num + 2) + '</li><li>' + (num + 3) + '</li>');
load.style.display = 'none';
} else {
end.style.display = 'block';
}
});
</script>
</body>
</html>
