2019-8-16 seo达人
实现导航的左右滑动类似于腾讯新闻，网易等导航，一下贴上代码：
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Untitled Document</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<style>
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,form,input,p,th,td,table,textarea,select{margin:0;padding:0;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
th,em{font-style:normal;font-weight:normal;}
ol,ul{list-style:none;}
table{border-collapse:collapse;border-spacing:0;}
img,a img{border:0;}
body{font:12px 'Microsoft YaHei',Arial;color:#666;background-color:#eee;}
.nav{width:100%;overflow:hidden;margin:0 auto;height:35px;position:relative; line-height:35px;background-color:#000;}
.nav ul{position:absolute;left:0;top:0;width:640px;z-index:1;}
.nav ul li{width:80px; float:left; overflow:hidden;}
.nav a{color:#fff;width:100%; display:block; text-decoration:none; text-align:center;}
</style>
<body>
<div class="nav" id="nav">
<ul>
<li><a href="#">菜单1</a></li>
<li><a href="#">菜单2</a></li>
<li><a href="#">菜单3</a></li>
<li><a href="#">菜单4</a></li>
<li><a href="#">菜单5</a></li>
<li><a href="#">菜单6</a></li>
<li><a href="#">菜单7</a></li>
<li><a href="#">菜单8</a></li>
<li><a href="#">菜单9</a></li>
<li><a href="#">菜单10</a></li>
</ul>
</div>
<script>
window.Swipe = function(b, a) {
if (!b) {
return null
}
this.options = a || {};
this.index = this.options.startSlide || 0;//开始的导航页的第几屏
this.speed = this.options.speed || 300;//速度
this.lwidth = this.options.width || 80;//导航li宽度
this.delay = this.options.auto || 0;//自动滚动菜单速度0为不自动滚动
this.container = b;//在那个容器内
this.element = this.container.children[0];//
this.setup();
if (this.delay != 0) {
this.begin();
}
if (this.element.addEventListener) {
this.element.addEventListener("touchstart", this, false);
this.element.addEventListener("touchmove", this, false);
this.element.addEventListener("touchend", this, false);
this.element.addEventListener("touchcancel", this, false);
this.element.addEventListener("webkitTransitionEnd", this, false);
this.element.addEventListener("msTransitionEnd", this, false);
this.element.addEventListener("oTransitionEnd", this, false);
this.element.addEventListener("transitionend", this, false);//监听过度动画是否结束
window.addEventListener("resize", this, false)
}
};
Swipe.prototype = {
//设置其基本样式
setup: function() {
this.slides = this.element.children;
this.width = Math.ceil(("getBoundingClientRect" in this.container) ? this.container.getBoundingClientRect().width: this.container.offsetWidth);
if (!this.width||this.slides.length < 1) {//没有子节点，获取不到屏幕宽度均返回
return null
}
this.element.style.width = Math.ceil(this.slides.length this.lwidth) + "px";
var a = this.slides.length;
while (a--) {
var b = this.slides[a];
b.style.width = this.lwidth + "px";
}
this.slide(this.index, 0);
},
slide: function(a, c) {
var b = this.element.style;
if (c == undefined) {
c = this.speed
}
//过度效果需要花费时间
b.webkitTransitionDuration = b.MozTransitionDuration = b.msTransitionDuration = b.OTransitionDuration = b.transitionDuration = c + "ms";
this.index = a
//console.log(a this.width,Math.ceil((this.slides.lengththis.lwidth)/this.width));
if(a this.width>(Math.ceil((this.slides.lengththis.lwidth)/this.width)-1)this.width){
// b.MozTransform = b.webkitTransform = "translate3d(" + -((Math.ceil((this.slides.lengththis.lwidth)/this.width)-1) this.width) + "px,0,0)";
// b.msTransform = b.OTransform = "translateX(" + -((Math.ceil((this.slides.lengththis.lwidth)/this.width)-1) this.width) + "px)";
return false;
}
else{
b.MozTransform = b.webkitTransform = "translate3d(" + -(a this.width) + "px,0,0)";
b.msTransform = b.OTransform = "translateX(" + -(a this.width) + "px)";
}
},
getPos: function() {
return this.index
},
//前一个，
prev: function(a) {
this.delay = a || 0;
clearTimeout(this.interval);
// console.log(this.index);
if (this.index) {
this.slide(this.index - 1, this.speed)
//console.log( this.index);
} else {
this.slide(this.length - 1, this.speed)
}
},
//后一个
next: function(a) {
this.delay = a || 0;
clearTimeout(this.interval);
if (this.index < this.length - 1) {
this.slide(this.index + 1, this.speed)
} else {
this.slide(0, this.speed)
}
},
begin: function() {
var a = this;
console.log(a);
this.interval = (this.delay) ? setTimeout(function() {
a.next(a.delay)
},
this.delay) : 0
},
stop: function() {
this.delay = 0;
clearTimeout(this.interval)
},
resume: function() {
this.delay = this.options.auto || 0;
this.begin()
},
handleEvent: function(a) {
switch (a.type) {
case "touchstart":
this.onTouchStart(a);
break;
case "touchmove":
this.onTouchMove(a);
break;
case "touchcancel":
case "touchend":
this.onTouchEnd(a);
break;
case "webkitTransitionEnd":
case "msTransitionEnd":
case "oTransitionEnd":
case "transitionend":
this.transitionEnd(a);
break;
case "resize":
this.setup();
break
}
},
transitionEnd: function(a) {
if (this.delay) {
this.begin()
}
},
onTouchStart: function(a) {
this.start = {
pageX: a.touches[0].pageX,
pageY: a.touches[0].pageY,
time: Number(new Date())
};
// console.log(this.start)
this.isScrolling = undefined;
this.deltaX = 0;
this.element.style.MozTransitionDuration = this.element.style.webkitTransitionDuration = 0;
a.stopPropagation()
},
onTouchMove: function(a) {
if (a.touches.length > 1 || a.scale && a.scale !== 1) {
return
}
this.deltaX = a.touches[0].pageX - this.start.pageX;
if (typeof this.isScrolling == "undefined") {
//判断是横向还是树向滑动
this.isScrolling = !!(this.isScrolling || Math.abs(this.deltaX) < Math.abs(a.touches[0].pageY - this.start.pageY))
}
if (!this.isScrolling) {
a.preventDefault();
clearTimeout(this.interval);
this.deltaX = this.deltaX / ((!this.index && this.deltaX > 0 || this.index == this.length - 1 && this.deltaX < 0) ? (Math.abs(this.deltaX) / this.width + 1) : 1);
this.element.style.MozTransform = this.element.style.webkitTransform = "translate3d(" + (this.deltaX - this.index * this.width) + "px,0,0)";
a.stopPropagation()
}
},
onTouchEnd: function(c) {
var b = Number(new Date()) - this.start.time < 250 && Math.abs(this.deltaX) > 20 || Math.abs(this.deltaX) > this.width / 2,
a = !this.index && this.deltaX > 0 || this.index == this.length - 1 && this.deltaX < 0;
if (!this.isScrolling) {
this.slide(this.index + (b && !a ? (this.deltaX < 0 ? 1: -1) : 0), this.speed)
}
c.stopPropagation()
}
};
//开始调用插件
var slider=new Swipe(document.getElementById('nav'),{speed:500,auto:0,width:100,col:4,});
</script>
</body>
</html>
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