Kesan lapisan pop timbul animasi praktikal JS example_javascript kemahiran-tutorial js-php.cn

Kesan lapisan pop timbul animasi praktikal JS example_javascript kemahiran

WBOY

Lepaskan： 2016-05-16 16:01:04

asal

984 orang telah melayarinya

Contoh dalam artikel ini menerangkan kaedah praktikal kesan lapisan pop timbul animasi dalam JS. Kongsikan dengan semua orang untuk rujukan anda. Kaedah pelaksanaan khusus adalah seperti berikut:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>动画弹出层</title>
<style>
.list{
position:relative;;
background:#eee;
border:1px #ccc solid;
margin:10px;
height:30px;
width:100px;
cursor :pointer ;
}
.listShow{
position:relative;
background:#eff;
border:1px #ddd solid;
margin:10px;
height:30px;
width:100px;
cursor :pointer ;
}
.comment{
position:absolute;
left:0;
display:none;
position:absolute;
border:1px #ccc solid;
background:#fee;
width:200px;
height:200px;
overflow:hidden;
z-index:100;
}
</style>
</head>
<body>
<div class="" id="show">
0
</div>
<div class="list" id="list1">1
<div class="comment" id="comment1">内容显示111<br/>
</div>
<div class="list" id="list2">2
<div class="comment" id="comment2">内容显示222</div>
</div>
<div class="list" id="list3">3
<div class="comment" id="comment3">内容显示333</div>
</div>
</body>
</html>
<script>
var zindex=0;
function $id(id){
return document.getElementById(id);
}
var Bind = function(object,fun){
var args = Array.prototype.slice.call(arguments).slice(2);
return function(){
return fun.apply(object,args);
}
}
function addEventHandler(oTarget, sEventType, fnHandler){ 
if(oTarget.addEventListener){
oTarget.addEventListener(sEventType, fnHandler, false);
}
else if(oTarget.attachEvent){
oTarget.attachEvent('on' + sEventType, fnHandler);
}
else{oTarget['on' + sEventType] = fnHandler;}
}
var Shower=function(){
this.list=null;
this.comment=null;
this.moveLeft=80; 
this.moveTop=20;
this.height=150;
this.width=250;
this.time=800;
this.init=function(lisObj,comObj){
this.list=lisObj;
this.comment=comObj;
var _this=this;
this._fnMove=Bind(this,this.move);
(function(){
var obj=_this;
addEventHandler(obj.list,"click",obj._fnMove);
})();
};
this.move=function(){
var _this=this;
var w=0; 
var h=0; 
var height=0; //弹出div的高
var width=0; //弹出div的宽
var t=0;
var startTime = new Date().getTime();//开始执行的时间
if(!_this.comment.style.display||_this.comment.style.display=="none"){
_this.comment.style.display="block";
_this.comment.style.height=0+"px";
_this.comment.style.width=0+"px";
_this.list.style.zIndex=++zindex;
_this.list.className="listShow";
var comment=_this.comment.innerHTML; 
_this.comment.innerHTML=""; //去掉显示内容
var timer=setInterval(function(){
var newTime = new Date().getTime();
var timestamp = newTime - startTime;
_this.comment.style.left=Math.ceil(w)+"px";
_this.comment.style.top=Math.ceil(h)+"px";
_this.comment.style.height=height+"px";
_this.comment.style.width=width+"px";
t++;
var change=(Math.pow((timestamp/_this.time-1), 3) +1);
//根据运行时间得到基础变化量
w=_this.moveLeft*change;
h=_this.moveTop*change;
height=_this.height*change;
width=_this.width*change;
$id("show").innerHTML=w;
if(w>_this.moveLeft){
clearInterval(timer);
_this.comment.style.left=_this.moveLeft+"px";
_this.comment.style.top=_this.moveTop+"px"; _this.comment.style.height=_this.height+"px";
_this.comment.style.width=_this.width+"px";
_this.comment.innerHTML=comment; //回复显示内容
}
},1,_this.comment);
}else{
_this.hidden();
}
}
this.hidden=function(){
var _this=this;
var flag=1;
var hiddenTimer=setInterval(function(){
if(flag==1){
_this.comment.style.height=parseInt(_this.comment.style.height)-10+"px";
}else{
_this.comment.style.width=parseInt(_this.comment.style.width)-15+"px";
_this.comment.style.left=parseInt(_this.comment.style.left)+5+"px";
}
if(flag==1 && parseInt(_this.comment.style.height)<10){
flag=-flag;
}
if(parseInt(_this.comment.style.width)<20){
clearInterval(hiddenTimer);
_this.comment.style.left="0px";
_this.comment.style.top="0px";
_this.comment.style.height="0px";
_this.comment.style.width="0px";
_this.comment.style.display="none";
if(_this.list.style.zIndex==zindex){
zindex--;
};
_this.list.style.zIndex=0;
_this.list.className="list";
}
},1)
}
}
window.onload=function(){
//建立各个菜单对象
var shower1=new Shower();
shower1.init($id("list1"),$id("comment1"));
var shower2=new Shower();
shower2.init($id("list2"),$id("comment2"));
var shower3=new Shower();
shower3.init($id("list3"),$id("comment3"));
}
</script>

Salin selepas log masuk

Kesannya adalah seperti di bawah:

Saya harap artikel ini akan membantu reka bentuk pengaturcaraan JavaScript semua orang.