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微博的几个小功能
主要是做这几个功能
1、“广播”按钮的高亮显示；
2、计算文本框中文字的个数；
3、话题、朋友和表情；
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>腾讯微博</title>
<style type="text/css">
body {
margin: 0px;
background: url(‘img/wrapBg.jpg‘) no-repeat #EBF1F1;
}
#logo {
margin: 30px 0 0 300px;
}
#myBody {
width: 800px;
height: 200px;
border: 1px solid #000;
}
#myBdLeft {
width: 590px;
height: 100%;
background: #fff;
float: left;
}
#talkBox {
text-align: left;
margin: 0 0 0 25px;
}
#msgTxt {
width: 540px;
height: 80px;
overflow: hidden;
font-family: Tahoma, Arial;
font-size: 14px;
border: 1px solid gray;
}
#talkBox h2 {
text-align: left;
padding: 0px;
margin: 0px;
font: normal normal normal 18px/29px ‘MicroSoft YaHei‘, SimHei;
}
#funBox {
width: 540px;
}
#funBox a {
color: #000;
text-decoration: none;
font-size: 14px;
}
.creatNew, .atSome, .insertFace, .uploadPic, .uploadVideo {
background-position: -170px -33px;
display: inline-block;
height: 16px;
padding-left: 18px;
}
.countTxt {
color: #999;
float: right;
line-height: 33px;
margin: 0 15px 0 0;
}
.countTxt em {
font-family: Georgia, Tahoma, Arial;
font-size: 26px;
position: relative;
top: -5px;
vertical-align: middle;
}
.sendBtn {
float: right;
margin: 0 20px 0 0;
padding: 0px;
background: url(img/bg1.png) -117px -165px no-repeat;
line-height: 33px;
margin-left: 14px;
height: 30px;
width: 112px;
border: 0px;
cursor: pointer;
}
#btnCloFri {
cursor: pointer;
}
#myBdRight {
background: #CCEBF4;
width: 210px;
height: 100%;
float: right;
}
</style>
<script src=http://www.mamicode.com/"jquery-1.8.3.js"></script>
<script type="text/javascript">
//1。扩展jQuery
$.fn.selectRange = function (start, end) {
var curObj = $(this).get(0);
if (!curObj) return;
else if (curObj.setSelectionRange) {
curObj.focus(); curObj.setSelectionRange(start, end);
} /* WebKit */
else if (curObj.createTextRange) {
var range = curObj.createTextRange();
range.collapse(true);
range.moveEnd(‘character‘, end);
range.moveStart(‘character‘, start);
range.select();
} /* IE */
else if (curObj.selectionStart) {
curObj.selectionStart = start;
curObj.selectionEnd = end;
}
};
$(function () {
//第一个 设置按钮的高亮显示
$(‘#sendBox .sendBtn‘).mouseover(function () {
$(this).css(‘backgroundPosition‘, ‘0 -195px‘);
}).mouseout(function () {
$(this).css(‘backgroundPosition‘, ‘-117px -165px‘);
});
setInterval(function () {
$(‘#msgTxt‘).change();
}, 500);
//第二个 计算文字的个数
$(‘#msgTxt‘).change(function () {
var len = 140 - $(this).val().length;
if (len >= 0) {
$(‘#sendBox .countTxt‘).html(‘还能输入<em>‘ + len + ‘</em>个字‘);
}
else {
$(‘#sendBox .countTxt‘).html(‘已经超出了<em><font color="red" size="5">‘ + Math.abs(len) + ‘</font></em>个字‘);
}
});
//第三个 话题
$(‘#funBox .creatNew‘).click(function () {
if ($(‘#msgTxt‘).val().length == 0) {
$(‘#msgTxt‘).val(‘#输入话题标题#‘).selectRange(1, 7);
}
});
//第四个 功能
var friendsList = [‘小明‘, ‘凤姐‘, ‘卡卡西‘, ‘梅超风‘, ‘郭靖‘, ‘乔峰‘, ‘独孤求败‘];
$(‘#funBox .atSome‘).click(function () {
//1、创建一个层
if ($(‘#dv‘).length == 0) {
var dvObj = $(‘<div id="dv" style="border:1px blue solid; width:100px; backgroun-color:white; position:absolute;"></div>‘).appendTo($(‘body‘));
dvObj.css(‘left‘, $(this).offset().left + ‘px‘);
dvObj.css(‘top‘, $(this).offset().top + $(this).height() + ‘px‘);
}
//2、创建关闭的span标签---浮动
$(‘<span style="background-color:gray; cursor:pointer; float:right">关闭</span>‘).click(function () {
//删除层
$(this).parent().remove();
}).appendTo(dvObj);
//3、根据键值对创建列表li标签 --- 设置样式
var ulObj = $(‘<ul style="clear:both; list-style-type:none; margin:0; padding:0;"></ul>‘).appendTo(dvObj);//创建ul添加到层中
for (var i = 0; i < friendsList.length; i++) {
$(‘<li style="margin-bottom:5px; cursor:pointer;">@‘ + friendsList[i] + ‘</li>‘).mouseover(function () {
$(this).css(‘backgroundColor‘, ‘yellow‘);
}).mouseout(function () {
$(this).css(‘backgroundColor‘, ‘‘);
}).click(function () {
if ($(‘#msgTxt‘).val().length == 0 || $(‘#msgTxt‘).val() == "#输入话题标题#") {
$(‘#msgTxt‘).val($(this).text()); //把li中的值显示到文本框中
}
else {
$("#msgTxt").val($(‘#msgTxt‘).val() + $(this).text());
}
}).appendTo(ulObj);
}
});
// 显示表情
var userFaces = { ‘0.gif‘: ‘微笑‘, ‘1.gif‘: ‘撇嘴‘, ‘2.gif‘: ‘色‘, ‘3.gif‘: ‘发呆‘, ‘4.gif‘: ‘得意‘, ‘5.gif‘: ‘流泪‘, ‘6.gif‘: ‘害羞‘, ‘7.gif‘: ‘闭嘴‘, ‘8.gif‘: ‘睡‘, ‘9.gif‘: ‘大哭‘, ‘10.gif‘: ‘尴尬‘, ‘11.gif‘: ‘发怒‘, ‘12.gif‘: ‘调皮‘, ‘13.gif‘: ‘呲牙‘, ‘14.gif‘: ‘惊讶‘, ‘15.gif‘: ‘难过‘, ‘16.gif‘: ‘酷‘, ‘17.gif‘: ‘冷汗‘, ‘18.gif‘: ‘抓狂‘, ‘19.gif‘: ‘吐‘, ‘20.gif‘: ‘偷笑‘, ‘21.gif‘: ‘可爱‘, ‘22.gif‘: ‘白眼‘, ‘23.gif‘: ‘傲慢‘, ‘24.gif‘: ‘饥饿‘, ‘25.gif‘: ‘困‘, ‘26.gif‘: ‘惊恐‘, ‘27.gif‘: ‘流汗‘, ‘28.gif‘: ‘憨笑‘, ‘29.gif‘: ‘大兵‘, ‘30.gif‘: ‘奋斗‘, ‘31.gif‘: ‘咒骂‘, ‘32.gif‘: ‘疑问‘, ‘33.gif‘: ‘嘘‘, ‘34.gif‘: ‘晕‘, ‘35.gif‘: ‘折磨‘, ‘36.gif‘: ‘衰‘, ‘37.gif‘: ‘骷髅‘, ‘38.gif‘: ‘敲打‘, ‘39.gif‘: ‘再见‘, ‘40.gif‘: ‘擦汗‘, ‘41.gif‘: ‘抠鼻‘, ‘42.gif‘: ‘鼓掌‘, ‘43.gif‘: ‘糗大了‘, ‘44.gif‘: ‘坏笑‘, ‘45.gif‘: ‘左哼哼‘, ‘46.gif‘: ‘右哼哼‘, ‘47.gif‘: ‘哈欠‘, ‘48.gif‘: ‘鄙视‘, ‘49.gif‘: ‘委屈‘, ‘50.gif‘: ‘快哭了‘, ‘51.gif‘: ‘阴险‘, ‘52.gif‘: ‘亲亲‘, ‘53.gif‘: ‘吓‘, ‘54.gif‘: ‘可怜‘, ‘55.gif‘: ‘菜刀‘, ‘56.gif‘: ‘西瓜‘, ‘57.gif‘: ‘啤酒‘, ‘58.gif‘: ‘篮球 ‘, ‘59.gif‘: ‘乒乓‘, ‘60.gif‘: ‘咖啡‘, ‘61.gif‘: ‘饭‘, ‘62.gif‘: ‘猪头‘, ‘63.gif‘: ‘玫瑰‘, ‘64.gif‘: ‘凋谢‘, ‘65.gif‘: ‘示爱‘, ‘66.gif‘: ‘爱心‘, ‘67.gif‘: ‘心碎‘, ‘68.gif‘: ‘蛋糕‘, ‘69.gif‘: ‘闪电‘, ‘70.gif‘: ‘炸弹‘, ‘71.gif‘: ‘刀‘, ‘72.gif‘: ‘足球‘, ‘73.gif‘: ‘瓢虫‘, ‘74.gif‘: ‘便便‘, ‘75.gif‘: ‘月亮‘, ‘76.gif‘: ‘太阳‘, ‘77.gif‘: ‘礼物‘, ‘78.gif‘: ‘拥抱‘, ‘79.gif‘: ‘强‘, ‘80.gif‘: ‘弱‘, ‘81.gif‘: ‘握手‘, ‘82.gif‘: ‘胜利‘, ‘83.gif‘: ‘抱拳‘, ‘84.gif‘: ‘勾引‘, ‘85.gif‘: ‘拳头‘, ‘86.gif‘: ‘差劲‘, ‘87.gif‘: ‘爱你‘, ‘88.gif‘: ‘NO‘, ‘89.gif‘: ‘OK‘, ‘90.gif‘: ‘爱情‘, ‘91.gif‘: ‘飞吻‘, ‘92.gif‘: ‘跳跳‘, ‘93.gif‘: ‘发抖‘, ‘94.gif‘: ‘怄火‘, ‘95.gif‘: ‘转圈‘, ‘96.gif‘: ‘磕头‘, ‘97.gif‘: ‘回头‘, ‘98.gif‘: ‘跳绳‘, ‘99.gif‘: ‘挥手‘, ‘100.gif‘: ‘激动‘, ‘101.gif‘: ‘街舞‘, ‘102.gif‘: ‘献吻‘, ‘103.gif‘: ‘左太极‘, ‘104.gif‘: ‘右太极‘, ‘105.gif‘: ‘淡定‘, ‘106.gif‘: ‘晕‘, ‘107.gif‘: ‘不满‘, ‘108.gif‘: ‘睡觉‘, ‘109.gif‘: ‘小调皮‘, ‘110.gif‘: ‘咒骂‘, ‘111.gif‘: ‘发怒‘, ‘112.gif‘: ‘偷笑‘, ‘113.gif‘: ‘微笑‘, ‘114.gif‘: ‘震惊‘, ‘115.gif‘: ‘囧‘ };
$(‘#funBox .insertFace‘).click(function () {
//创建大层
var dvBigObj = $(‘<div id="dv" style="width:370px; background-color:white;border:1px solid blue;position:absolute;"></div>‘).appendTo($(‘body‘));
dvBigObj.css(‘left‘, $(this).offset().left - 100 + ‘px‘);
dvBigObj.css(‘top‘, $(this).offset().top + $(this).height() + ‘px‘);
if (true) {
}
//创建两个span标签
$(‘<span style="float">表情</span>‘).appendTo(dvBigObj);
$(‘<span style="float:right;cursor:pointer; background-color:gray;">关闭</span>‘).click(function () {
$(this).parent().remove();
}).appendTo(dvBigObj);
//创建一个小层---装表情图片
var dvimgObj = $(‘<div style="clear:both"></div>‘).appendTo(dvBigObj);//该层显示图片
for (var key in userFaces) {
$(‘<img src=http://www.mamicode.com/"faces/‘ + key + ‘" title="‘ + userFaces[key] + ‘">‘).mouseover(function () {
$(this).css(‘cursor‘, ‘pointer‘);
}).click(function () {
if ($(‘#msgTxt‘).val().length == 0 || $(‘#msgTxt‘).val() == ‘#输入话题标题#‘) {
$(‘#msgTxt‘).val(‘[‘ + $(this).attr(‘title‘) + ‘]‘)
}
else {
$(‘#msgTxt‘).val($(‘#msgTxt‘).val() + ‘[‘ + $(this).attr(‘title‘) + ‘]‘);
}
}).appendTo(dvimgObj);
}
//小表情注册单击事件
});
});
</script>
</head>
<body>
<img id="logo" src=http://www.mamicode.com/"img/b3_100901.png" alt="" />
<center>
<div id="myBody">
<div id="myBdLeft">
<div id="talkBox">
<h2>
<a>夏天来了，你懂得......</a>
</h2>
<textarea id="msgTxt"></textarea>
<div id="funBox">
<a href="javascript:void(0);" class="creatNew">话题</a> <a href="javascript:void(0);"
class="atSome">朋友</a> <a href="javascript:void(0);" class="insertFace">表情</a>
<a href="javascript:void(0);" class="uploadPic">照片</a> <a href="javascript:void(0);"
class="uploadVideo">视频</a>
</div>
<div id="sendBox">
<input type="button" class="sendBtn" value=http://www.mamicode.com/"" />
<span class="countTxt">还能输入<em>140</em>字</span>
</div>
</div>
</div>
<div id="myBdRight">
</div>
</div>
</center>
</body>
</html>
这是表情的展示效果
微博的几个小功能