其实也就是垂直轮播图的原理,当然可以直接使用轮播图组件去实现,在网上看到一个用很简单的代码就实现了的,一看就懂,可以在他的代码的基础上进行修改 >原文
> 1);
});
}
var index = 1;
var curIndex = 1;
var wrap = document.getElementById("wrap");
var main = document.getElementById("main");
var hei = document.body.clientHeight;
wrap.style.height = hei + "px";
var obj = document.getElementsByTagName("div");
for (var i = 0; i < obj.length; i++) {
if (obj[i].className == 'page') {
obj[i].style.height = hei + "px";
}
}
var pageNum = document.querySelectorAll(".page").length;
//如果不加时间控制,滚动会过度灵敏,一次翻好几屏
var startTime = 0, //翻屏起始时间
endTime = 0,
now = 0;
//浏览器兼容
if ((navigator.userAgent.toLowerCase().indexOf("firefox") != -1)) {
document.addEventListener("DOMMouseScroll", scrollFun, false);
} else if (document.addEventListener) {
document.addEventListener("mousewheel", scrollFun, false);
} else if (document.attachEvent) {
document.attachEvent("onmousewheel", scrollFun);
} else {
document.onmousewheel = scrollFun;
}
//滚动事件处理函数
function scrollFun(event) {
startTime = new Date().getTime();
var delta = event.detail || (-event.wheelDelta);
//mousewheel事件中的 “event.wheelDelta” 属性值:返回的如果是正值说明滚轮是向上滚动
//DOMMouseScroll事件中的 “event.detail” 属性值:返回的如果是负值说明滚轮是向上滚动
if ((endTime - startTime) < -1000) {
if (delta > 0 && parseInt(main.offsetTop) > -(hei * (pageNum - 1))) {
//向下滚动
index++;
toPage(index);
}
if (delta < 0 && parseInt(main.offsetTop) < 0) {
//向上滚动
index--;
toPage(index);
}
endTime = new Date().getTime();
} else {
event.preventDefault();
}
}
function toPage(idx) {
//jquery实现动画效果
if(idx!=curIndex){
index=idx
var delta=idx - curIndex;
now = now - delta * hei;
$("#main").animate({
top: (now + 'px')
}, 500);
curIndex = idx;
//更改列表的选中项
$(".pageUlLi").css("color", "black");
$("#pageUlLi" + idx).css("color", "red");
}
}
// //鼠标悬停翻页
// document.getElementById("pageUlLi1").onmouseover = function () {
// toPage(1);
// }
// document.getElementById("pageUlLi2").onmouseover = function () {
// toPage(2);
// }
// document.getElementById("pageUlLi3").onmouseover = function () {
// toPage(3);
// }
// document.getElementById("pageUlLi4").onmouseover = function () {
// toPage(4);
// }
// document.getElementById("pageUlLi5").onmouseover = function () {
// toPage(5);
// }
//鼠标点击翻页
document.getElementById("pageUlLi1").onclick = function () {
toPage(1);
}
document.getElementById("pageUlLi2").onclick = function () {
toPage(2);
}
document.getElementById("pageUlLi3").onclick = function () {
toPage(3);
}
document.getElementById("pageUlLi4").onclick = function () {
toPage(4);
}
document.getElementById("pageUlLi5").onclick = function () {
toPage(5);
}
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