Js实现无刷新删除内容

2024-05-06 16:19:00

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本文给大家分享的是一段仿腾讯微博的无刷新删除特效的代码，非常的实用，有需要的小伙伴可以参考下。

Js实现无刷新删除内容

<!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=gb2312" />

<title>仿腾讯微博效果</title>

<style type="text/css">

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 /5b8b/4f53;}

#msgBox{width:500px;background:#fff;border-radius:5px;margin:10px auto;padding-top:10px;}

#msgBox form h2{font-weight:400;font:400 18px/1.5 /5fae/8f6f/96c5/9ed1;}

#msgBox form{background:url() repeat-x 0 bottom;padding:0 20px 15px;}

#userName,#conBox{color:#777;border:1px solid #d0d0d0;border-radius:6px;background:#fff url(img/inputBG.png) 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{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 #f60;opacity:1;filter:alpha(opacity=100);}

#sendBtn{border:0;width:112px;height:30px;cursor:pointer;margin-left:10px;background:url(img/btn.png) no-repeat;}

#sendBtn.hover{background-position:0 -30px;}

#msgBox form .maxNum{font:26px/30px Georgia, Tahoma, Arial;padding:0 5px;}

#msgBox .list{padding:10px;}

#msgBox .list h3{position:relative;height:33px;font-size:14px;font-weight:400;background:#e3eaec;border:1px solid #dee4e7;}

#msgBox .list h3 span{position:absolute;left:6px;top:6px;background:#fff;line-height:28px;display:inline-block;padding:0 15px;}

#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:#fff;overflow:hidden;}

#msgBox .list ul li.hover{background:#f5f5f5;}

#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;font-family:arial;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;}

.tr{overflow:hidden;zoom:1;}

.tr p{float:right;line-height:30px;}

.tr *{float:left;}

</style>

<script type="text/javascript">

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];

}

else

{

return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle(obj, null)[attr]

}

break;

case 3:

attr == "opacity" ? (obj.style["filter"] = "alpha(opacity=" + value + ")", obj.style[attr] = value / 100) : obj.style[attr] = value;

break;

}

};

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 i = 0;

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 += oConBox.value.charAt(i).charCodeAt() > 255 ? 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="face1.gif" class="current" /><img src="face2.gif" /><img src="face1.gif" /><img src="face2.gif" /></p>

</div>

<div><input id="conBox" class="f-text"></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="face.gif" /></div>

<div class="content">

<div class="userName"><a href="javascript:;">日丶久生情</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="face.gif" /></div>

<div class="content">

<div class="userName"><a href="javascript:;">日丶久生情</a>:</div>

<div class="msgInfo">新增选择头像功能。</div>

<div class="times"><span>07月05日 12:08</span><a class="del" href="javascript:;">删除</a></div>

</div>

</li>

<li>

<div class="userPic"><img src="face.gif" /></div>

<div class="content">

<div class="userName"><a href="javascript:;">日丶久生情</a>:</div>

<div class="msgInfo">增加了记录广播时间的功能。</div>

<div class="times"><span>07月04日 16:55</span><a class="del" href="javascript:;">删除</a></div>

</div>

</li>

</ul>

</div>

</div>

</body>

</html>