本文实例分享了javascript制作微信聊天面板的相关代码，具体内容如下
先上图吧
点击头像更换说话对象，简单说下实现原理，html中创建一个ul用于存放所有说话的内容，对话内容是有javascript 动态生成，
主要难点：先布局好css，当时奥巴马发送时候，让这个li有浮动，当是小胖时候，让这个li左浮动。
代码：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>模拟短信发送</title> <style> * { margin: 0; padding: 0; list-style: none; font-family: '微软雅黑' } #container { width: 450px; height: 780px; background: #eee; margin: 80px auto 0; position: relative; box-shadow: 20px 20px 55px #777; } .header { background: #000; height: 34px; color: #fff; line-height: 34px; font-size: 20px; padding: 0 10px; } .footer { width: 430px; height: 50px; background: #666; position: absolute; bottom: 0; padding: 10px; } .footer input { width: 275px; height: 45px; outline: none; font-size: 20px; text-indent: 10px; position: absolute; border-radius: 6px; right: 80px; } .footer span { display: inline-block; width: 62px; height: 48px; background: #ccc; font-weight: 900; line-height: 45px; cursor: pointer; text-align: center; position: absolute; right: 10px; border-radius: 6px; } .footer span:hover { color: #fff; background: #999; } #icon { display: inline-block; background: red; width: 60px; height: 60px; border-radius: 30px; position: absolute; bottom: 6px; left: 14px; cursor: pointer; overflow: hidden; } img { width: 60px; height: 60px; } .content { font-size: 20px; width: 435px; height: 662px; overflow: auto; padding: 5px; } .content li { margin-top: 10px; padding-left: 10px; width: 412px; display: block; clear: both; overflow: hidden; } .content li img { float: left; } .content li span{ background: #7cfc00; padding: 10px; border-radius: 10px; float: left; margin: 6px 10px 0 10px; max-width: 310px; border: 1px solid #ccc; box-shadow: 0 0 3px #ccc; } .content li img.imgleft { float: left; } .content li img.imgright { float: right; } .content li span.spanleft { float: left; background: #fff; } .content li span.spanright { float: right; background: #7cfc00; } </style> <script> window.onload = function(){ var arrIcon = ['img/1.jpg','img/2.jpg']; var num = 0; //控制头像改变 var iNow = -1; //用来累加改变左右浮动 var icon = document.getElementById('icon').getElementsByTagName('img'); var btn = document.getElementById('btn'); var text = document.getElementById('text'); var content = document.getElementsByTagName('ul')[0]; var img = content.getElementsByTagName('img'); var span = content.getElementsByTagName('span'); icon[0].onclick = function(){ if(num==0){ this.src = arrIcon[1]; num = 1; }else if(num==1){ this.src = arrIcon[0]; num = 0; } } btn.onclick = function(){ if(text.value ==''){ alert('发送内容不能为空'); }else { content.innerHTML += '<li><img src="'+arrIcon[num]+'"><span>'+text.value+'</span></li>'; iNow++; if(num==0){ img[iNow].className += 'imgright'; span[iNow].className += 'spanright'; }else { img[iNow].className += 'imgleft'; span[iNow].className += 'spanleft'; } text.value = ''; } } } </script> </head> <body> <div id="container"> <div> <span>白超华-博客园</span> <span>20:30</span> </div> <ul></ul> <div> <div id="icon"> <img src="img/1.jpg" alt=""> </div> <input id="text" type="text" placeholder="说点什么吧..."> <span id="btn">发送</span> </div> </div> </body> </html>
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希望本文所述对大家学习javascript程序设计有所帮助。