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js仿制微博效果进阶版本.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>防止腾讯weibo</title>
<style>
body,div,h2,h3,ul,li,p{
margin:0;
padding:0;
}
a{
text-decoration:none;
}
a:hover{
text-decoration:underline;
}
ul{
list-style-type:none;
}
body{
color:#333;
background:#3c3a3b;
font:12px/1.5 微软雅黑;
}
#msgBox{
width:500px;
background-image: linear-gradient(50deg, #bfbfbf,white);;
border-radius:5px;
margin:10px auto;
padding-top:10px;
}
#msgBox form h2{
font-weight:400;
font:400 18px/1.5 微软雅黑;
}
#msgBox form{
background-image:linear-gradient(50deg,);
padding:0 20px 15px;
}
#userName,#conBox{
color:#777;
border:1px solid #d0d0d0;
border-radius:6px;
background:#fff repeat-x;
padding:3px 5px;
font:14px/1.5 arial;
}
#userName.active,#conBox.active{
border:1px solid #7abb2c;
}
#userName{
height:20px;
}
#conBox{
width:448px;
resize:none;
height:65px;
overflow:auto;
}
#msgBox form div{
position:relative;
color:#999;
margin-top:10px;
}
#msgBox img{
border-radius:3px;
}
#face{
font-size:0;
position:absolute;
top:0;
left:172px;
}
#face img{
width:30px;
height:30px;
cursor:pointer;
margin-right:6px;
opacity:0.5;
filter:alpha(opacity=50);
}
#face img.hover,#face img.current{
width:28px;
height:28px;
border:1px solid blue;
opacity:1;
filter:alpha(opacity=100);
}
#sendBtn{
border:0;
width:112px;
height:30px;
cursor:pointer;
margin-left:10px;
background:url(image3/bb.jpg) no-repeat;
}
#sendBtn.hover{
background-position:0 -30px;
}
#msgBox form .maxNum{
font:26px/30px Georgia,Tahoma,Arial;
padding:0 5px;
}
.tr{
overflow:hidden;
}
.tr p{
float:right;
line-height:30px;
}
.tr *{
float:left;
}
#msgBox .list{
padding:10px;
}
#msgBox .list h3{
position:relative;
height:33px;
font-size:14px;
font-weight:400;
background:#e3eaec;
border-radius:2px;
}
#msgBox .list h3 span{
position:absolute;
left:6px;
top:6px;
color:#999;
line-height:22px;
display:inline-block;
padding:0 15px;
border-radius:5px;
}
#msgBox .list ul{
overflow:hidden;
zoom:1;
}
#msgBox .list ul li{
float:left;
clear:both;
width:100%;
border-bottom:1px dashed #d8d8d8;
padding:10px 0;
background:#efefef;
overflow:hidden;
}
#msgBox .list ul li.hover{
background:#e0e0e0;
}
#msgBox .list .userPic{
float:left;
width:50px;
height:50px;
display:inline;
margin-left:10px;
border:1px solid #ccc;
border-radius:3px;
}
#msgBox .list .content{
float:left;
width:400px;
font-size:14px;
margin-left:10px;
word-wrap:break-word;
}
#msgBox .list .userName{
display:inline;
padding-right:5px;
}
#msgBox .list .userName a{
color:#2b4a78;
}
#msgBox .list .msgInfo{
display:inline;
word-wrap:break-word;
}
#msgBox .list .times{
color:#889db6;
font:12px/18px arial;
margin-top:5px;
overflow:hidden;
zoom:1;
}
#msgBox .list .times span{
float:left;
}
#msgBox .list .times a{
float:right;
color:#889db6;
display:none;
}
</style>
<script>
/*获取id，class，tagName*/
var get={
byId:function(id){
return typeof id==="string"?document.getElementById(id):id
},
byClass:function(sClass,oParent){
var aClass=[];
var reClass=new RegExp("(^|)"+sClass+"(|$)");
var aElem=this.byTagName("*",oParent);
for(var i=0;i<aElem.length;i++)reClass.test(aElem[i].className)&&aClass.push(aElem[i]);
return aClass
},
byTagName:function(elem,obj){
return (obj||document).getElementsByTagName(elem);
}
};
/*事件绑定，删除*/
var EventUtil={
addHandler:function(oElement,sEvent,fnHandler){
oElement.addEventListener?oElement.addEventListener(sEvent,fnHandler,false):(oElement["_"+sEvent+fnHandler]=fnHandler,oElement[sEvent+fnHandler]=function(){oElement["_"+sEvent+fnHandler]()},oElement.attachEvent("on"+sEvent,oElement[sEvent+fnHandler]))
},
removeHandler:function(oElement,sEvent,fnHandler){
oElement.removeEventListener?oElement.removeEventListener(sEvent,fnHandler,false):oElement.detachEvent("on"+sEvent,oElement[sEvent+fnHandler]);
},
addLoadHandler:function(fnHandler){
this.addHandler(window,"load",fnHandler)
}
};
//设置css样式，读取css样式
function css(obj,attr,value){
switch(arguments.length){
case 2:
if(typeof arguments[1]=="object")
{
for(var i in attr)
i=="opacity"?(obj.style["filter"]="alpha(opacity="+attr[i]+")",obj.style[i]=attr[i]/100):obj.style[i]=attr[i];
}
/*如果第二个元素是对象，对应的每个属性，若是透明度则改变透明度，若不是透明度则改变对应属性值*/
else
{
return obj.currentStyle?obj.currentStyle[attr]:getComputedStyle(obj,null)[attr];
}
/*如果不是对象，直接返回对象是什么*/
break;
case 3:
attr=="opacity"?(obj.style["filter"]="alpha(opacity="+value+")",obj.style[attr]=value/100):obj.style[attr]=value;
/*如果是三个对象，判断同上*/
break;
}
};
/*其实下面的这句话相当于是window.onload=function(){}*/
EventUtil.addLoadHandler(function(){
var oMsgBox=get.byId("msgBox");
var oUserName=get.byId("userName");
var oConBox=get.byId("conBox");
var oSendBtn=get.byId("sendBtn");
var oMaxNum=get.byClass("maxNum")[0];
var oCountTxt=get.byClass("countTxt")[0];
var oList=get.byClass("list")[0];
var oUl=get.byTagName("ul",oList)[0];
var aLi=get.byTagName("li",oList);
var aFtxt=get.byClass("f-text",oMsgBox);
var aImg=get.byTagName("img",get.byId("face"));
var bSend=false;
var timer=null;
var oTmp="";
var maxNum=140;
//禁止表单提交
EventUtil.addHandler(get.byTagName("form",oMsgBox)[0],"submit",function(){return false;});
//为广播按钮绑定发送事件
EventUtil.addHandler(oSendBtn,"click",fnSend);
//为Ctrl+Enter快捷键绑定发送事件
EventUtil.addHandler(document,"keyup",function(event)
{
var event=event||window.event;
event.ctrlKey&&event.keyCode==13&&fnSend()
});
//发送广播函数
function fnSend ()
{
var reg = /^\s*$/g;
if(reg.test(oUserName.value))
{
alert("\u8bf7\u586b\u5199\u60a8\u7684\u59d3\u540d");
oUserName.focus()
}
else if(!/^[u4e00-\u9fa5\w]{2,8}$/g.test(oUserName.value))
{
alert("\u59d3\u540d\u75312-8\u4f4d\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u3001\u6c49\u5b57\u7ec4\u6210\uff01");
oUserName.focus()
}
else if(reg.test(oConBox.value))
{
alert("\u968f\u4fbf\u8bf4\u70b9\u4ec0\u4e48\u5427\uff01");
oConBox.focus()
}
else if(!bSend)
{
alert("\u4f60\u8f93\u5165\u7684\u5185\u5bb9\u5df2\u8d85\u51fa\u9650\u5236\uff0c\u8bf7\u68c0\u67e5\uff01");
oConBox.focus()
}
else
{
var oLi = document.createElement("li");
var oDate = new Date();
oLi.innerHTML = "<div class=\"userPic\"><img src=\"" + get.byClass("current", get.byId("face"))[0].src + "\"></div>\
<div class=\"content\">\
<div class=\"userName\"><a href=\"javascript:;\">" + oUserName.value + "</a>:</div>\
<div class=\"msgInfo\">" + oConBox.value.replace(/<[^>]*>| /ig, "") + "</div>\
<div class=\"times\"><span>" + format(oDate.getMonth() + 1) + "\u6708" + format(oDate.getDate()) + "\u65e5 " + format(oDate.getHours()) + ":" + format(oDate.getMinutes()) + "</span><a class=\"del\" href=\"javascript:;\">\u5220\u9664</a></div>\
</div>";
//插入元素
aLi.length ? oUl.insertBefore(oLi, aLi[0]) : oUl.appendChild(oLi);
//重置表单
get.byTagName("form", oMsgBox)[0].reset();
for (i = 0; i < aImg.length; i++) aImg[i].className = "";
aImg[0].className = "current";
//将元素高度保存
var iHeight = oLi.clientHeight - parseFloat(css(oLi, "paddingTop")) - parseFloat(css(oLi, "paddingBottom"));
var alpah = count = 0;
css(oLi, {"opacity" : "0", "height" : "0"});
timer = setInterval(function ()
{
css(oLi, {"display" : "block", "opacity" : "0", "height" : (count += 8) + "px"});
if (count > iHeight)
{
clearInterval(timer);
css(oLi, "height", iHeight + "px");
timer = setInterval(function ()
{
css(oLi, "opacity", (alpah += 10));
alpah > 100 && (clearInterval(timer), css(oLi, "opacity", 100))
},30)
}
},30);
//调用鼠标划过/离开样式
liHover();
//调用删除函数
delLi()
}
};
//事件绑定, 判断字符输入
EventUtil.addHandler(oConBox, "keyup", confine);
EventUtil.addHandler(oConBox, "focus", confine);
EventUtil.addHandler(oConBox, "change", confine);
//输入字符限制
function confine ()
{
var iLen = 0;
for (i = 0; i < oConBox.value.length; i++) iLen += /[^\x00-\xff]/g.test(oConBox.value.charAt(i)) ? 1 : 0.5;
oMaxNum.innerHTML = Math.abs(maxNum - Math.floor(iLen));
maxNum - Math.floor(iLen) >= 0 ? (css(oMaxNum, "color", ""), oCountTxt.innerHTML = "\u8fd8\u80fd\u8f93\u5165", bSend = true) : (css(oMaxNum, "color", "#f60"), oCountTxt.innerHTML = "\u5df2\u8d85\u51fa", bSend = false)
}
//加载即调用
confine();
//广播按钮鼠标划过样式
EventUtil.addHandler(oSendBtn, "mouseover", function () {this.className = "hover"});
//广播按钮鼠标离开样式
EventUtil.addHandler(oSendBtn, "mouseout", function () {this.className = ""});
//li鼠标划过/离开处理函数
function liHover()
{
for (i = 0; i < aLi.length; i++)
{
//li鼠标划过样式
EventUtil.addHandler(aLi[i], "mouseover", function (event)
{
this.className = "hover";
oTmp = get.byClass("times", this)[0];
var aA = get.byTagName("a", oTmp);
if (!aA.length)
{
var oA = document.createElement("a");
oA.innerHTML = "删除";
oA.className = "del";
oA.href = "javascript:;";
oTmp.appendChild(oA)
}
else
{
aA[0].style.display = "block";
}
});
//li鼠标离开样式
EventUtil.addHandler(aLi[i], "mouseout", function ()
{
this.className = "";
var oA = get.byTagName("a", get.byClass("times", this)[0])[0];
oA.style.display = "none"
})
}
}
liHover();
//删除功能
function delLi()
{
var aA = get.byClass("del", oUl);
for (i = 0; i < aA.length; i++)
{
aA[i].onclick = function ()
{
var oParent = this.parentNode.parentNode.parentNode;
var alpha = 100;
var iHeight = oParent.offsetHeight;
timer = setInterval(function ()
{
css(oParent, "opacity", (alpha -= 10));
if (alpha < 0)
{
clearInterval(timer);
timer = setInterval(function ()
{
iHeight -= 10;
iHeight < 0 && (iHeight = 0);
css(oParent, "height", iHeight + "px");
iHeight == 0 && (clearInterval(timer), oUl.removeChild(oParent))
},30)
}
},30);
this.onclick = null
}
}
}
delLi();
//输入框获取焦点时样式
for (i = 0; i < aFtxt.length; i++)
{
EventUtil.addHandler(aFtxt[i], "focus", function () {this.className = "active"});
EventUtil.addHandler(aFtxt[i], "blur", function () {this.className = ""})
}
//格式化时间, 如果为一位数时补0
function format(str)
{
return str.toString().replace(/^(\d)$/,"0$1")
}
//头像
for (i = 0; i < aImg.length; i++)
{
aImg[i].onmouseover = function ()
{
this.className += " hover"
};
aImg[i].onmouseout = function ()
{
this.className = this.className.replace(/\s?hover/,"")
};
aImg[i].onclick = function ()
{
for (i = 0; i < aImg.length; i++) aImg[i].className = "";
this.className = "current"
}
}
});
</script>
</head>
<body>
<div id="msgBox">
<form>
<h2>来，说说你在做什么，想什么</h2>
<div>
<input id="userName" class="f-text" value="" />
<p id="face">
<img src="images/img1.jpg" class="current" />
<img src="images/img2.jpg" />
<img src="images/img3.jpg" />
<img src="images/img4.jpg" />
<img src="images/img5.jpg" />
<img src="images/img6.jpg" />
<img src="images/img7.jpg" />
<img src="images/img8.jpg" />
</p>
</div>
<div><textarea id="conBox" class="f-text"></textarea></div>
<div class="tr">
<p>
<span class="countTxt">还能输入</span><strong class="maxNum">140</strong><span>个字</span>
<input id="sendBtn" type="button" value="" title="快捷键 Ctrl+Enter" />
</p>
</div>
</form>
<div class="list">
<h3><span>大家在说</span></h3>
<ul>
<li>
<div class="userPic"><img src="images/img26.jpg" /></div>
<div class="content">
<div class="userName"><a href="javascript:;">海客无心</a>:</div>
<div class="msgInfo">新增删除广播功能。</div>
<div class="times"><span>07月05日 15:14</span><a class="del" href="javascript:;">删除</a></div>
</div>
</li>
<li>
<div class="userPic"><img src="images/img28.jpg" /></div>
<div class="content">
<div class="userName"><a href="javascript:;">海客无心</a>:</div>
<div class="msgInfo">新增 Ctrl+Enter快捷键发送广播。</div>
<div class="times"><span>07月05日 12:20</span><a class="del" href="javascript:;">删除</a></div>
</div>
</li>
<li>
<div class="userPic"><img src="images/img45.jpg" /></div>
<div class="content">
<div class="userName"><a href="javascript:;">海客无心</a>:</div>
<div class="msgInfo">新增选择头像功能</div>
<div class="times"><span>07月12日 12:31</span><a class="del" href="javascript:;">删除</a></div>
</div>
</li>
<li>
<div class="userPic"><img src="images/img44.jpg" /></div>
<div class="content">
<div class="userName"><a href="javascript:;">海客无心</a>:</div>
<div class="msgInfo">增加了记录广播时间的功能</div>
<div class="times"><span>07月12日 12:31</span><a class="del" href="javascript:;">删除</a></div>
</div>
</li>
<li>
<div class="userPic"><img src="images/img67.jpg" /></div>
<div class="content">
<div class="userName"><a href="javascript:;">海客无心</a>:</div>
<div class="msgInfo">增加了输入字符检测的功能</div>
<div class="times"><span>07月20日 12:23</span><a class="del" href="javascript:;">删除</a></div>
</div>
</li>
<li>
<div class="userPic"><img src="images/img54.jpg" /></div>
<div class="content">
<div class="userName"><a href="javascript:;">海客无心</a>:</div>
<div class="msgInfo">仿制腾讯微博,欢迎大家测试!</div>
<div class="times"><span>02月06日 15:18</span><a class="del" href="javascript:;">删除</a></div>
</div>
</li>
</ul>
</div>
</div>
</body>
</html>