JS如何实现可用滑块滑动的缓动-创新互联
这篇文章主要介绍了JS如何实现可用滑块滑动的缓动,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。

尝试模仿京东的“发现好货”模块的可用滑块滑动的缓动图
JS代码
function $(id) { return document.getElementById(id); }
//缓动轮播图
var fhTimer;
var fhNum = 0;
var barNum = 0;
fhTimer = setInterval(marquee, 20);
function marquee() {
fhNum--;
barNum = fhNum;
if(fhNum < -2400) {
fhNum = 0;
}
$("fhc_ul").style.left = fhNum + "px";
if(fhNum < -2400) {
barNum = fhNum + 2400;
}
$("fhc_dBar").style.left = -(barNum / 2.75) + "px";
}
$("fhcShow").onmouseover = function() {
$("fhc_d_box").style.display = "block";
clearInterval(fhTimer);
}
$("fhc_d_box").onmouseover = function() {
$("fhc_d_box").style.display = "block";
}
$("fhcShow").onmouseout = function() {
$("fhc_d_box").style.display = "none";
fhTimer = setInterval(marquee, 20);
}
//鼠标悬浮在标题也在暂停滚动
$("fhTit").onmouseover = function() {
clearInterval(fhTimer);
}
$("fhTit").onmouseout = function() {
fhTimer = setInterval(marquee, 20);
}
//滑块
$("fhc_dBar").onmousedown = function(event) {
var event = event || window.event;
var leftValue = event.clientX - this.offsetLeft;
document.onmousemove = function(event) {
var evt = event || window.event;
var locationX = evt.clientX - leftValue;
if(locationX < 0) {
locationX = 0;
}
else if(locationX > 960 - 99) {
locationX = 960 - 99;
}
$("fhc_dBar").style.left = locationX + "px";
fhNum = -locationX * 2.75;
//如果选中了,就取消选中,防止出现bug
window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty();
}
document.onmouseup = function() {
document.onmousemove = null;//取消注册的这个事件
}
}HTML代码
CSS代码 .fxhh .fxhh_ctt { width: 990px; background-color: #fff; float: left; } .fxhh .fxhh_ctt .fh_c_show .fh_c_under img { width: 150px; height: 150px; } .fxhh .fxhh_ctt .fh_c_show { width: 990px; height: 260px; background-color: #fff; overflow: hidden; position: relative; } .fxhh .fxhh_ctt .fh_c_show .fh_c_under { width: 2000%; position: absolute; } .fxhh .fxhh_ctt .fh_c_show .fh_c_under li { float: left; text-align: center; width: 150px; height: 180px; margin-top: 40px; margin-right: 50px; } .fxhh .fxhh_ctt .fh_c_show .fh_c_under li .topTit { margin-bottom: 10px; } .fxhh .fxhh_ctt .fh_c_show .fh_c_under li .botTit { margin-top: 10px; } .fxhh .fxhh_ctt .fhc_box { display: none; width: 960px; height: 4px; background-color: #f3f3f3; margin: 0 auto; position: absolute; top: 250px; left: 210px; } .fxhh .fxhh_ctt .fhc_drop { width: 99px; height: 9px; border-radius: 4px; background-color: #d8d8d8; position: absolute; top: -3px; }
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