js focus text scrolling effect code sharing_javascript skills
The example in this article describes the js focus text scrolling effect. Share it with everyone for your reference. The details are as follows:
Effect description:
The one recommended today is another native js focus image effect
Automatic switching by default, you can also switch manually
JavaScript code uses functional object programming, which is the Module mode in JavaScript programming
The basic usage is very simple, there are three main features :
1. Modular and reusable
2. It encapsulates variables and functions, does not touch the global namespace, and does not pollute global variables
3. Only the available public methods are exposed, and all other private methods are hidden to ensure that js will not conflict with each other
Operation rendering: -------------------View effect-------------------
Tips: If the browser does not work properly, you can try switching the browsing mode.
The jQuery drop-down beautification search form effect code shared with you is as follows
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>纯js(不依赖现有框架)焦点文字滚动效果</title>
<style >
*{margin:0;padding:0; list-style:none;}
#slider{overflow:hidden;width:470px;height:150px;position:relative; margin:100px auto;}
#slider .pics{width:470px;height:150px}
#slider .pics li{height:150px;width:470px;float:left}
#slider #nav {position:absolute;bottom:5px;right:5px;}
#slider #nav li.nav{background:#F47500; color:#fff;}
#slider #nav li{border:1px solid #f47500; color:#d94b01; cursor:pointer;background:#fff;font-size:12px; height:15px;width:15px;float:left;margin-left:4px;display:inline;text-align:center}
</style>
</head>
<body>
<!--代码部分begin-->
<div id="slider">
<ul class="pics">
<li><img src="/static/imghw/default1.png" data-src="images/01.jpg" class="lazy" alt="js focus text scrolling effect code sharing_javascript skills" /></li>
<li><img src="/static/imghw/default1.png" data-src="images/02.jpg" class="lazy" alt="js focus text scrolling effect code sharing_javascript skills" /></li>
<li><img src="/static/imghw/default1.png" data-src="images/03.jpg" class="lazy" alt="js focus text scrolling effect code sharing_javascript skills" /></li>
<li><img src="/static/imghw/default1.png" data-src="images/04.jpg" class="lazy" alt="js focus text scrolling effect code sharing_javascript skills" /></li>
<li><img src="/static/imghw/default1.png" data-src="images/05.jpg" class="lazy" alt="js focus text scrolling effect code sharing_javascript skills" /></li>
</ul>
<ul id="nav">
<li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(0)},300)">1</li>
<li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(1)},300)">2</li>
<li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(2)},300)">3</li>
<li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(3)},300)">4</li>
<li onmouseover="setTimeout(function(){lanrenzhijia.slider.pos(4)},300)">5</li>
</ul>
</div>
<script>
var lanrenzhijia = {}, H$ = function(id){return document.getElementById(id)}, H$$ = function(c,p){return p.getElementsByTagName(c)}
lanrenzhijia.slider = function(){
return{
init:function(id,options){
var ul = this.u = H$$('ul',H$(id))[0], li = H$$('li',ul); this.l=li.length; this.index = 0;
if(options.navId&&options.curClass){this.nav = H$$('li',H$(options.navId)), this.c = options.curClass;}
this.a=options.auto||0; this.v=options.vertical||0;H$(id).style.overflow = 'hidden';H$(id).style.position = 'relative';ul.style.position='absolute';
if(this.v){ul.style.top=0; this.h=options.height||li[0].offsetHeight; ul.style.height=(this.l*this.h)+'px';}
else{ul.style.left=0; this.w=options.width||li[0].offsetWidth; ul.style.width=(this.l*this.w)+'px';}
this.pos(options.index||0,this.a?1:0);
},
pos:function(pos,a){
clearInterval(this.u.posAnim); clearInterval(this.u.auto);
var curPos=this.v?parseInt(this.u.style.top):parseInt(this.u.style.left),
correctPos=this.v?pos*this.h:pos*this.w,
direction = correctPos>Math.abs(curPos)?1:-1;
correctPos*=-1;
this.index = pos;
if(this.nav){for(var i=0;i<this.l;i++){this.nav[i].className = i==pos?this.c:''}}
this.u.posAnim = setInterval(function(){lanrenzhijia.slider.anim(correctPos,direction,a)},10);
},
anim:function(des,dir,a){
var curPos=this.v?parseInt(this.u.style.top):parseInt(this.u.style.left);
if(curPos == des){
clearInterval(this.u.posAnim);
if(a||this.a){lanrenzhijia.slider.auto()}
}
else{
var v=curPos-Math.ceil(Math.abs(des-curPos)*.07)*dir+'px';
this.v?this.u.style.top=v:this.u.style.left=v;
}
},
auto:function(){
this.u.auto=setInterval(function(){lanrenzhijia.slider.move(1,1)},this.a*1000)
},
move:function(n,a){
var num=this.index+n, i=n==1?num==this.l?0:num:num<0?this.l-1:num; lanrenzhijia.slider.pos(i,a);
}
};
}();
</script>
<script>
lanrenzhijia.slider.init('slider',{
auto:3,
vertical:1,
navId:'nav',
curClass:'nav',
index:0});
</script>
<!--代码部分end-->
</body>
</html>
The above is the js (does not rely on existing framework) focus text scrolling effect code shared with you. I hope you can like it.
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