使用Require.js封装原生js轮播图的实现代码
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2022-04-10 11:29:14
index.html页面:
index.html页面:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>require.js封装轮播图</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
list-style: none;
}
#banner{
width: 830px;
height: 440px;
border: solid 1px;
margin: 50px auto;
position: relative;
overflow: hidden;
}
#banner ul{
position: absolute;
left: 0;
top: 0;
}
#banner ul li{
width: 830px;
height: 440px;
float: left;
}
#banner p{
position: absolute;
left: 50%;
bottom: 10px;
margin-left: -30px;
}
#banner p span{
display: block;
float: left;
width: 15px;
height: 15px;
margin-right: 6px;
background: #ccc;
border-radius: 50%;
}
#banner p .on{
background: red;
}
</style>
<script type="text/javascript" src="require.js" data-main='init'></script>
<!--<script type="text/javascript">
require(['slider'],function(mod){
mod.slide()
})
</script>-->
</head>
<body>
<div id="banner">
<ul>
<li><img src="images/1.jpg"/></li>
<li><img src="images/2.jpg"/></li>
</ul>
<p>
<span class="on"></span>
<span></span>
<span></span>
</p>
</div>
</body>
</html>
get.js代码如下:
define(function(require,exports,module){
exports.getstyle = function (obj,name){
if(obj.currentstyle){
return obj.currentstyle[name];
}else{
return getcomputedstyle(obj,false)[name];
};
};
});
init.js代码如下
require(['slider'],function(mod){
mod.slide();
});
slider.js代码如下
define(function(require, exports, module) {
var move = require('startmove');
var abtn = document.getelementbyid('banner').getelementsbytagname('span');
var oul = document.getelementbyid('banner').getelementsbytagname('ul')[0];
var ali = oul.children;
//三张图片所占的宽度，length返回的是字符串中的字符数
oul.style.width = ali.length * ali[0].offsetwidth + 'px';
exports.slide = function() {
for(var i = 0; i < abtn.length; i++) {
abtn[i].index = i;
abtn[i].onclick = function() {
for(var i = 0; i < abtn.length; i++) {
abtn[i].classname = '';
}
abtn[this.index].classname = 'on';
move.move(oul, {
left: -this.index * ali[0].offsetwidth;
});
};
};
};
});
startmove.js代码如下
define(function(require, exports, module) {
var get = require('get');
exports.move = function move(obj, json, complete) {
clearinterval(obj.timer);
var complete = complete || {};
complete.dur = complete.dur || 1000;
complete.easing = complete.easing || 'ease-out';
var count = parseint(complete.dur / 30); //总次数
var start = {}; //{width:300,height:300}
var dis = {};
//{width:300,height:300}
for(var name in json) {
start[name] = parsefloat(get.getstyle(obj, name));
dis[name] = json[name] - start[name];
}
var n = 0; //当前步数
obj.timer = setinterval(function() {
n++;
for(var name in json) {
var a = n / count;
switch(complete.easing) {
case 'linear':
var cur = start[name] + a * dis[name];
break;
case 'ease-in':
var cur = start[name] + math.pow(a, 3) * dis[name];
break;
case 'ease-out':
var a = 1 - n / count;
var cur = start[name] + (1 - math.pow(a, 3)) * dis[name];
break;
};
if(name == 'opacity') {
obj.style[name] = cur;
obj.style.filter = 'alpha(' + cur * 100 + ')';
} else {
obj.style[name] = cur + 'px';
};
};
if(n == count) {
clearinterval(obj.timer)
complete.fn && complete.fn();
};
}, 30);
};
});
以上所述是小编给大家介绍的使用require.js封装原生js轮播图，希望对大家有所帮助