<span 1</span> <span var</span> lastID = "1";<span //</span><span 声明上次取回的消息的ID</span>
<span 2</span> <span var</span> isposted = <span false</span><span ;
</span><span 3</span> <span var</span> mGetTime;<span //</span><span 设置setTimeout的返回值
</span><span 4</span> <span // 通过封装getAjax()方法创建XMLHTTPRequest对象</span>
<span 5</span> <span function</span> <span trim</span>(str){ <span //</span><span 删除左右两端的空格</span>
<span 6</span> <span return</span> str.replace(/(^\s*)|(\s*$)/g, ""<span );
</span><span 7</span> <span }
</span><span 8</span>
<span 9</span> <span function</span><span getPlainTxt() {
</span><span 10</span> <span var</span> str=UE.getEditor('myEditor').<span getContent()
</span><span 11</span> str=<span trim</span><span (str);
</span><span 12</span> $('#mess').<span html(str);
</span><span 13</span> <span }
</span><span 14</span>
<span 15</span> <span function</span><span setContentmess() {
</span><span 16</span> UE.getEditor('myEditor').setContent('', <span false</span><span );
</span><span 17</span> <span return</span><span ;
</span><span 18</span> <span }
</span><span 19</span>
<span 20</span> <span //</span><span 获取JSURL后面的参数</span>
<span 21</span> <span function</span> _getArgs(name,<span _number){
</span><span 22</span> <span var</span> jsFileName =<span name;
</span><span 23</span> <span var</span> rName = <span new</span> RegExp(jsFileName+"(\\?(.*))?$"<span )
</span><span 24</span> <span var</span> jss=document.getElementsByTagName('script'<span );
</span><span 25</span> <span for</span> (<span var</span> i = 0;i < jss.length; i++<span ){
</span><span 26</span> <span var</span> j =<span jss[i];
</span><span 27</span> <span if</span> (j.src&&j.src.<span match(rName)){
</span><span 28</span> <span var</span> oo = j.src.match(rName)[2<span ];
</span><span 29</span> <span if</span> (oo&&(t = oo.match(/([^&=]+)=([^=&]+)/<span g))){
</span><span 30</span> <span for</span> (<span var</span> l = 0; l < t.length; l++<span ){
</span><span 31</span> r =<span t[l];
</span><span 32</span> <span var</span> tt = r.match(/([^&=]+)=([^=&]+)/<span );
</span><span 33</span> <span if</span><span (tt)
</span><span 34</span> <span return</span><span tt[_number];
</span><span 35</span> <span //</span><span document.write('参数：' + tt[1] + '，参数值：' + tt[2] + '<br />');</span>
<span 36</span> <span }
</span><span 37</span> <span }
</span><span 38</span> <span }
</span><span 39</span> <span }
</span><span 40</span> <span }
</span><span 41</span>
<span 42</span>
<span 43</span> <span function</span><span user_to(){
</span><span 44</span> <span var</span> userid1=$('#userid1').<span val();
</span><span 45</span> <span if</span>(userid1=='所有人'<span ){
</span><span 46</span> alert('请选择聊天对象哦!\n\n点击用户名称即可!'<span );
</span><span 47</span> $("#userid2").attr("checked",<span false</span><span );
</span><span 48</span> <span }
</span><span 49</span> <span return</span> <span false</span><span ;
</span><span 50</span> <span }
</span><span 51</span>
<span 52</span>
<span 53</span>
<span 54</span>
<span 55</span>
<span 56</span> <span //</span><span 点击选择用户</span>
<span 57</span> <span function</span><span getFirend(name) {
</span><span 58</span> <span var</span><span new_name;
</span><span 59</span> <span if</span>(name.length > 1 && name!="所有人"<span ) {
</span><span 60</span> $("#userto").<span val(name);
</span><span 61</span> $("#userid1").attr("checked",<span false</span><span );
</span><span 62</span> $("#userid2").attr("checked",<span true</span><span );
</span><span 63</span>
<span 64</span> <span if</span>(name.length > 8<span ) {
</span><span 65</span> new_name = name.<span substr</span>(0, 6<span );
</span><span 66</span> } <span else</span><span {
</span><span 67</span> new_name =<span name;
</span><span 68</span> <span }
</span><span 69</span> document.getElementById("tousertitle").innerHTML = "<font color=#ff6600 title=" + new_name + ">" + new_name + "</font>"<span ;
</span><span 70</span> }<span else</span><span {
</span><span 71</span>
<span 72</span> $("#userto").val("所有人"<span );
</span><span 73</span>
<span 74</span> $("#userid1").attr("checked",<span true</span><span );
</span><span 75</span> $("#userid2").attr("checked",<span false</span><span );
</span><span 76</span>
<span 77</span>
<span 78</span>
<span 79</span> document.getElementById("tousertitle").innerHTML = "用户"<span ;
</span><span 80</span> <span }
</span><span 81</span> <span }
</span><span 82</span>
<span 83</span>
<span 84</span>
<span 85</span> <span //</span><span 发送消息的方法</span>
<span 86</span> <span function</span><span sendMess()
</span><span 87</span> <span {
</span><span 88</span>
<span 89</span> <span getPlainTxt();
</span><span 90</span> <span //</span><span 如果消息为空给出提示并返回</span>
<span 91</span> <span var</span> messvalue =$("#mess").<span html();
</span><span 92</span> messvalue=<span trim</span><span (messvalue);
</span><span 93</span>
<span 94</span> <span if</span>(messvalue.length>650<span ){
</span><span 95</span> alert("参与互动提示：\n亲,输入的文字是不是有点多了？！，少说点吧!\n\n复制过来的文字!请先清除格式！"<span );
</span><span 96</span> <span //</span><span document.getElementById("mess").focus();//把焦点设置到消息输入框</span>
<span 97</span> <span return</span> <span false</span><span ;
</span><span 98</span> <span }
</span><span 99</span>
<span 100</span>
<span 101</span>
<span 102</span> <span if</span>($("#mess").html().length<2<span ){
</span><span 103</span> alert("参与互动提示：\n请填写您要发表的内容，长度必须2～250个字节！"<span );
</span><span 104</span> <span //</span><span document.getElementById("mess").focus();//把焦点设置到消息输入框</span>
<span 105</span> <span return</span> <span false</span><span ;
</span><span 106</span> <span }
</span><span 107</span>
<span 108</span> <span var</span> d = <span new</span> <span Date</span><span ();
</span><span 109</span> <span var</span> username = $("#username").<span val() ;
</span><span 110</span> <span var</span> userto = $("#userto").<span val() ;
</span><span 111</span> <span var</span> userid = $("#userid").<span val() ;
</span><span 112</span> <span //</span><span var mess = document.getElementById("mess").value ;</span>
<span 113</span> <span var</span> mess =<span messvalue ;
</span><span 114</span> <span var</span> userpid = $("#userpid").<span val() ;
</span><span 115</span> <span var</span> IP = $("#IP").<span val() ;
</span><span 116</span> <span var</span> usertype = $("#usertype").<span val() ;
</span><span 117</span>
<span 118</span> <span var</span> sendUrl = "username="+username+"&userto="+userto+"&userid="+userid+"&userpid="+userpid+"&mess="+mess +"&IP="+IP +"&usertype="+usertype+"&d="+d.<span getTime();
</span><span 119</span> <span var</span> sendUrl =<span encodeURI(sendUrl);
</span><span 120</span> XMLHttp.sendReq('POST', 'send.php',sendUrl,<span send_response);
</span><span 121</span>
<span 122</span>
<span 123</span> <span }
</span><span 124</span>
<span 125</span> <span function</span><span send_response(obj){
</span><span 126</span> <span var</span> response = obj.<span responseText;
</span><span 127</span> <span if</span>(response=='ok'<span ){
</span><span 128</span> <span if</span>(!<span isposted){
</span><span 129</span> isposted = <span true</span><span ;
</span><span 130</span> <span getMess();
</span><span 131</span> <span }
</span><span 132</span> setContentmess();<span //</span><span 设置消息框为空</span>
<span 133</span> <span }
</span><span 134</span> <span if</span>(response=='false'<span ){
</span><span 135</span> alert("发送失败！你的字符含有非法字"<span );
</span><span 136</span> <span getMess();
</span><span 137</span> <span }
</span><span 138</span> <span }
</span><span 139</span>
<span 140</span> <span function</span><span getMess(){
</span><span 141</span> <span var</span> d = <span new</span> <span Date</span><span ();
</span><span 142</span>
<span 143</span> <span var</span> getUrl = "getmess.php?lastid="+lastID +"&numbermess=80&d="+d.getTime();<span //</span><span 从服务器返回消息的地址</span>
<span 144</span> $.<span ajax({
</span><span 145</span> type:"GET",
<span 146</span> dataType:"xml",
<span 147</span> url:getUrl,
<span 148</span> async: <span true</span>,
<span 149</span> timeout:80000, <span //</span><span ajax请求超时时间80秒</span>
<span 150</span>
<span 151</span> success:<span function</span>(data,<span textStatus){
</span><span 152</span> <span //</span><span 从服务器得到数据，显示数据并继续查询</span>
<span 153</span> isposted = <span false</span><span ;
</span><span 154</span> <span var</span> chatEL = $("#chat"<span );
</span><span 155</span> $(data).find("message").<span each</span>(<span function</span>(i,<span va){
</span><span 156</span> <span var</span> sid =$(this).find("sid").<span text();
</span><span 157</span> <span var</span> succ =$(this).find("succ").<span text();
</span><span 158</span> <span var</span> umax =$(this).find("umax").<span text();
</span><span 159</span> <span var</span> user =$(this).find("user").<span text();
</span><span 160</span> <span var</span> userto =$(this).find("userto").<span text();
</span><span 161</span> <span var</span> userid =$(this).find("userid").<span text();
</span><span 162</span> <span var</span> usersex =$(this).find("usersex").<span text();
</span><span 163</span> <span var</span> usertype =$(this).find("usertype").<span text();
</span><span 164</span> <span var</span> userpic =$(this).find("userpic").<span text();
</span><span 165</span> <span var</span> userpid =$(this).find("userpid").<span text();
</span><span 166</span> <span var</span> text =$(this).find("text").<span text();
</span><span 167</span> <span var</span> <span date</span> =$(this).find("date").<span text();
</span><span 168</span> <span var</span> uid = _getArgs('function.js','2'<span )
</span><span 169</span> <span //</span><span 有数据</span>
<span 170</span>
<span 171</span> <span if</span>(succ==1<span ){
</span><span 172</span> <span if</span>(uid>=98<span ){
</span><span 173</span> delhtml='<a href="#" id="delmess" onclick=delmess("'+ sid +'","delmess");>[删除]</a><a href="#" onclick=delmess("'+ userid +'","delusermess"); id="delusermess">[删除该用户的全部信息]</a>'<span ;
</span><span 174</span> }<span else</span><span {
</span><span 175</span> delhtml=''<span ;
</span><span 176</span> <span }
</span><span 177</span> <span if</span>(usertype>=98<span ){
</span><span 178</span> <span var</span> chatELinnerHTML = '<div class=chu><ul><li class=chu1><a href=http://www.0917cc.com?ID='+userid+' target=_blank><img src='+userpic+' border=0 width=70 height=70 /></a></li><li class=chu2><a href=http://www.0917cc.com?ID='+userid+' target=_blank><img src=/WebSystems/images/img/icons/gif/group.png /></a> <a href=javascript:void(0) onclick=getFirend("'+ user +'"); ><font class=ChatFont3>管理员(' + user + ')</font></a> <img src=/WebSystems/images/img/icons/gif/male.png /> <a href=javascript:void(0) onclick=getFirend("'+ userto +'");><font class=ChatFont3>' + userto + '</font></a> <font color=#575D69>说</font> <font color=#575D69>' + <span date</span> +'</font><img src=/WebSystems/images/img/icons/gif/07.gif />'+delhtml+'<br>' +text + '</li></ul></div>'<span ;
</span><span 179</span> chatEL.<span append(chatELinnerHTML);
</span><span 180</span> }<span else</span><span {
</span><span 181</span> <span var</span> chatELinnerHTML = '<div class=chu><ul><li class=chu1><a href="#" target=_blank><img src='+userpic+' border=0 width=70 height=70 /></a></li><li class=chu2><a href=http://www.0917cc.com?ID='+userid+' target=_blank><img src=/WebSystems/images/img/icons/gif/group.png /></a> <a href=javascript:void(0) onclick=getFirend("'+ user +'"); ><font class=ChatFont1>(' + user + ')</font></a> <img src=/WebSystems/images/img/icons/gif/male.png /> <a href=javascript:void(0) onclick=getFirend("'+ userto +'");><font class=ChatFont2>' + userto + '</font></a> <font color=#575D69>说</font> <font color=#575D69>' + <span date</span> +'</font>'+delhtml+'<br>' + text+ '</li></ul></div>'<span ;
</span><span 182</span> chatEL.<span append(chatELinnerHTML);
</span><span 183</span> <span }
</span><span 184</span> lastID = umax;<span //</span><span 上次消息的ID</span>
<span 185</span> chatEL.scrollTop(document.getElementById("chat").scrollHeight);<span //</span><span 滚动到最后一条消息</span>
<span 186</span> <span if</span>(!<span isposted){
</span><span 187</span> isposted = <span true</span><span ;
</span><span 188</span> <span getMess();
</span><span 189</span> <span }
</span><span 190</span> <span }
</span><span 191</span>
<span 192</span>
<span 193</span>
<span 194</span> <span //</span><span 未从服务器得到数据，继续查询</span>
<span 195</span> <span if</span>(succ==0<span ){
</span><span 196</span> lastID = sid;<span //</span><span 上次消息的ID</span>
<span 197</span> chatEL.scrollTop = chatEL.scrollHeight;<span //</span><span 滚动到最后一条消息</span>
<span 198</span> <span if</span>(!<span isposted){
</span><span 199</span> isposted = <span true</span><span ;
</span><span 200</span> <span getMess();
</span><span 201</span> <span }
</span><span 202</span> <span }
</span><span 203</span> <span });
</span><span 204</span> <span //</span><span each--end</span>
<span 205</span> },
<span 206</span> <span //</span><span -success-end
</span><span 207</span> <span //Ajax请求超时，继续查询</span>
<span 208</span> error:<span function</span>(XMLHttpRequest,textStatus,<span errorThrown){
</span><span 209</span> <span if</span>(textStatus=="timeout"<span ){
</span><span 210</span> $("#msg").show().html("您有好长时间没有发言了啊.").fadeOut(3200<span );
</span><span 211</span> <span if</span>(!<span isposted){
</span><span 212</span> isposted = <span true</span><span ;
</span><span 213</span> <span getMess();
</span><span 214</span> <span }
</span><span 215</span> <span }
</span><span 216</span> <span }
</span><span 217</span>
<span 218</span> <span });
</span><span 219</span>
<span 220</span> }
*本聊天系统采用PHP+AJAX+MYSQL开发而成！数据库支持mysql,支持XML,支持txt,支持accsess等数据库,可随意转换
聊天功能:1：表情2:超链接3:发送图片,4发送文件,5字体设置,6涂鸦功能
功能:可以对某个人说话,也可以对所有人说话,支持私聊(vip功能)
支持PHP长连接sleep实现的聊天室源码跟ajax实现的聊天室代码
作者:margin（qq:249189520----qq群:90316079-----账号1:admin密码:admin 账号2:demo 密码:demo
官方网站:http://www.0917cc.com
PHP+ajax聊天室模拟推送http://room.0917y.com/websystems/Chatroom2/
可以在火狐FF下查看连接进程跟下面的有什么不一样
PHP+ajax聊天室http://room.0917y.com/websystems/Chatroom/index.php?pid=25&ppid=64
*模拟推送是根据PHP长连接sleep实现的
不足跟缺点:
一直困惑了我一晚上都没有解决的问题是,在编辑器开头第一个插入空格的话！老是提示错误！好像跟XML规范有关系！
又好像是编辑器ueditor的问题取出来的空格会有c2a0会变成乱码，处理这种情况\u00a0不知道怎么处理
服务器的过滤不行！客户的过滤还不行！请求高手看下....
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
