js仿新浪微博消息发布功能
程序员文章站
2023-11-17 13:06:10
本文实例为大家分享了js仿新浪微博消息发布的具体代码，供大家参考，具体内容如下
<...
本文实例为大家分享了js仿新浪微博消息发布的具体代码，供大家参考，具体内容如下
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>仿新浪微博消息发布功能</title>
<style>
*{margin: 0; padding: 0;}
#div1{width: 400px; height: 400px; border: 1px solid; margin:10px auto; position: relative;overflow: hidden;}
#ul1 li{border-bottom: 1px #999 dashed; padding: 4px; list-style: none;filter: alpha(opacity:0);
opacity: 0;}
</style>
<script src="js/chuan.js"></script>
</head>
<body>
<textarea rows="5" cols="30" id="txt1"value=""></textarea>
<input type="button" id="btn1" value="发布" />
<div id="div1">
<ul id="ul1"></ul>
</div>
<script>
var oul=document.getelementbyid('ul1');
var otxt1=document.getelementbyid('txt1');
var obtn=document.getelementbyid('btn1');
obtn.onclick=function()
{
var oli=document.createelement('li');
oli.innerhtml=otxt1.value;
otxt1.value='';
if(oul.children.length>0)
{
oul.insertbefore(oli,oul.children[0]);
}
else
{
oul.appendchild(oli);
}
var iheight=oli.offsetheight;
oli.style.height=0;
move(oli,{height:iheight},function()
{
move(oli,{opacity:100});
});
}
</script>
</body>
</html>
chuan,js为之前写的完美运动框架：
function getstyle(obj,name)
{
if(obj.currentstyle)
{
return obj.currentstyle;
}
else
{
return getcomputedstyle(obj,false)[name];
}
}
function move(obj,json,fnend)
{
clearinterval(obj.timer);
obj.timer=setinterval(function()
{
var bbox=true;//假设所有值都已经到了
for(var strr in json)
{
if(strr=='opacity')
{
var cur=math.round(parsefloat(getstyle(obj,strr))*100);
}
else
{
var cur=parseint(getstyle(obj,strr));
}
var speed=(json[strr]-cur)/10;
speed=speed>0?math.ceil(speed):math.floor(speed);
if(cur!=json[strr])
bbox=false;
if(strr=='opacity')
{
obj.style.filter='alpha(opacity:'+(cur+speed+')');
obj.style.opacity=(cur+speed)/100;
}
else
{
obj.style[strr]=cur+speed+'px';
}
}
if(bbox)
{
clearinterval(obj.timer);
if(fnend)fnend();
}
},30);
};
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。