ajax 之js读取xml的多浏览器兼容

主要是分为两大类：IE、其它浏览器

IE8以下只支持这种

InputVoltage.innerText = xmlDoc.getElementsByTagName(id)[0].text,

其它浏览器大部分兼容这种

InputVoltage.innerHTML =xmlDoc.getElementsByTagName(id)[0].textContent。

部分代码如下：

  1 function Gett(str)
  2 {
  3  
  4   // 判断MyBrowserType，以决定读取text还textcontent。
  5   var browsertype= checkBrowser();
  6    var url="curr_run_xml.php";  
  7          // code for IE7+, Firefox, Chrome, Opera, Safari  
  8           try{
  9 
 10          xmlHttp=new XMLHttpRequest();     
 11          xmlHttp.onreadystatechange=function()
 12          {
 13              if (xmlHttp.readyState==4 && xmlHttp.status==200)
 14              {
 15 
 16                     xmlDoc=xmlHttp.responseXML;                        
 17                     InputVoltage.innerHTML =  GetXmlTextByTagName(xmlDoc,"input_vol_a")      
 18                     OutputVoltage.innerHTML = GetXmlTextByTagName(xmlDoc,"output_vol_a");       
 19                     OutputMinVoltage.innerHTML = GetXmlTextByTagName(xmlDoc, "output_min_vol");  
 20                     OutputMaxVoltage.innerHTML = GetXmlTextByTagName(xmlDoc, "output_max_vol"); 
 21                     Frequency.innerHTML = GetXmlTextByTagName(xmlDoc, "input_fre");   
 22                     CurrentLoad.innerHTML = GetXmlTextByTagName(xmlDoc, "output_load_a");
 23 
 24                       <?php 
 25 
 26                         if(isset($rs))
 27                         {
 28                            foreach ($rs as $key => $value) 
 29                            {
 30                               echo  $value['dp_paramname'].".innerHTML=GetXmlTextByTagName(xmlDoc,'".$value['dp_paramname']."');\r\n";
 31                            }
 32                         }
 33 
 34                         for($i=0;$i<count($resultHT);$i++)
 35                         {
 36                             $humidityVar = "td_humidity".$i;
 37                             $temperatureVar = "td_temperature".$i;
 38                             $ht_offline = "td_offline".$i;
 39                             echo  $ht_offline.".innerHTML=GetXmlTextByTagName(xmlDoc,'".$ht_offline."');\r\n";
 40                             echo  $humidityVar.".innerHTML=GetXmlTextByTagName(xmlDoc,'".$humidityVar."');\r\n";
 41                             echo  $temperatureVar.".innerHTML=GetXmlTextByTagName(xmlDoc,'".$temperatureVar."');\r\n";
 42                         }
 43 
 44                       ?>
 45 
 46               
 47                     BatteryVoltage.innerHTML = GetXmlTextByTagName(xmlDoc,"batt_total_vol");
 48                     BatteryContent.innerHTML = GetXmlTextByTagName(xmlDoc,"batt_cap");
 49                     UPSCTemperature.innerHTML = GetXmlTextByTagName(xmlDoc,"ups_temp");
 50                       tfvar = GetXmlTextByTagName(xmlDoc,"ups_temp");
 51                       fTemp = parseFloat(tfvar);
 52                       fTemp = (fTemp*9)/5+32;
 53                       tfnum = fTemp.toFixed(2); 
 54                     UPSFTemperature.innerHTML=tfnum.toString();
 55                   
 56                   
 57                      state1 = GetXmlTextByTagName(xmlDoc,"ws_value7");
 58                      state2 = GetXmlTextByTagName(xmlDoc,"ws_value4");
 59                      state3 = GetXmlTextByTagName(xmlDoc,"ws_value6");
 60                      state4 = GetXmlTextByTagName(xmlDoc,"ws_value5");
 61                      state5 = GetXmlTextByTagName(xmlDoc,"ws_value0");
 62                      state6 = GetXmlTextByTagName(xmlDoc,"ws_value1");
 63                      state7 = GetXmlTextByTagName(xmlDoc,"ws_value3");
 64                      state8 = GetXmlTextByTagName(xmlDoc,"ws_value2");
 65 
 66                     changeImage();
 67                     changeWord();    
 68              }
 69            }
 70            xmlHttp.open("GET",url,false);  
 71            xmlHttp.send(null);  
 72          }
 73          catch (e) 
 74           {
 75 
 76                       xmlHttp = -1;
 77                       var XmlHttpVersions = new Array("Microsoft.XMLDOM,MSXML2.XMLHTTP.6.0", "MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0", "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP", "Microsoft.XMLHTTP","Microsoft.XMLHTTP","MSXML4.DOMDocument", "MSXML3.DOMDocument", "MSXML2.DOMDocument", "MSXML.DOMDocument");
 78                       for (var i = 0; i < XmlHttpVersions.length ; i++) 
 79                       {
 80                         try {
 81                               if(xmlHttp = new ActiveXObject(XmlHttpVersions[i]))
 82                               {
 83                     
 84                               break;
 85                               }
 86                             
 87                          }
 88                       catch (e) 
 89                        {
 90                          continue;
 91                        }
 92                   }
 93     
 94 
 95 
 96           if (!xmlHttp)  alert("获取浏览器xml控件失败");
 97  
 98            xmlHttp.onreadystatechange=function()  
 99               {  
100                 if (xmlHttp.readyState==4  && xmlHttp.status==200)  
101                     {  
102                       
103                         xmlDoc=xmlHttp.responseXML;                        
104                         InputVoltage.innerText =  GetXmlTextByTagName(xmlDoc,"input_vol_a")      
105                         OutputVoltage.innerText = GetXmlTextByTagName(xmlDoc,"output_vol_a");       
106                         OutputMinVoltage.innerText = GetXmlTextByTagName(xmlDoc, "output_min_vol");  
107                         OutputMaxVoltage.innerText = GetXmlTextByTagName(xmlDoc, "output_max_vol"); 
108                         Frequency.innerText = GetXmlTextByTagName(xmlDoc, "input_fre");   
109                         CurrentLoad.innerText = GetXmlTextByTagName(xmlDoc, "output_load_a");
110 
111                           <?php 
112 
113                             if(isset($rs))
114                             {
115                                foreach ($rs as $key => $value) 
116                                {
117                                   echo  $value['dp_paramname'].".innerText=GetXmlTextByTagName(xmlDoc,'".$value['dp_paramname']."');\r\n";
118                                }
119                             }
120 
121                             for($i=0;$i<count($resultHT);$i++)
122                             {
123                                 $humidityVar = "td_humidity".$i;
124                                 $temperatureVar = "td_temperature".$i;
125                                 echo  $humidityVar.".innerText=GetXmlTextByTagName(xmlDoc,'".$humidityVar."');\r\n";
126                                 echo  $temperatureVar.".innerText=GetXmlTextByTagName(xmlDoc,'".$temperatureVar."');\r\n";
127                             }
128 
129                           ?>
130 
131                         BatteryVoltage.innerText = GetXmlTextByTagName(xmlDoc,"batt_total_vol");
132                         BatteryContent.innerText = GetXmlTextByTagName(xmlDoc,"batt_cap");
133                         UPSCTemperature.innerText = GetXmlTextByTagName(xmlDoc,"ups_temp");
134                           tfvar = GetXmlTextByTagName(xmlDoc,"ups_temp");
135                           fTemp = parseFloat(tfvar);
136                           fTemp = (fTemp*9)/5+32;
137                           tfnum = fTemp.toFixed(2); 
138                         UPSFTemperature.innerText=tfnum.toString();
139                       
140                       
141                          state1 = GetXmlTextByTagName(xmlDoc,"ws_value7");
142                          state2 = GetXmlTextByTagName(xmlDoc,"ws_value4");
143                          state3 = GetXmlTextByTagName(xmlDoc,"ws_value6");
144                          state4 = GetXmlTextByTagName(xmlDoc,"ws_value5");
145                          state5 = GetXmlTextByTagName(xmlDoc,"ws_value0");
146                          state6 = GetXmlTextByTagName(xmlDoc,"ws_value1");
147                          state7 = GetXmlTextByTagName(xmlDoc,"ws_value3");
148                          state8 = GetXmlTextByTagName(xmlDoc,"ws_value2");
149 
150                         changeImage();
151                         changeWord();   
152 
153                         xmlHttp = null;  
154                     }            
155               }  
156                 
157              xmlHttp.open("GET",url,false);  
158              xmlHttp.send(null);  
159 
160 
161             
162       }
163             
164         
165         setTimeout("Gett()",time_inteval);
166 }

 1 function check(reg) {
 2     var ug = navigator.userAgent.toLowerCase();
 3     return reg.test(ug);
 4  }
 5  
 6  function checkBrowser() 
 7  {
 8       var ug = navigator.userAgent.toLowerCase();
 9     //  var userAgent = document.getElementById("userAgent");
10     //  userAgent.innerHTML = "浏览器的用户代理报头：" + ug;
11         
12         //alert("浏览器的用户代理报头：" + ug);
13 
14       var browserType = "";
15       var ver = "";
16       
17       //检测IE及版本
18       var IE = ug.match(/msie\s*\d\.\d/); //提取浏览器类型及版本信息，注match()方法返回的是数组而不是字符串
19       var isIE = check(/msie/);
20       if(isIE) {
21        browserType = "Internet Explorer";
22        ver = IE.join(" ").match(/[0-9]/g).join("."); //先用join()方法转化为字符串，然后用match()方法匹配到版本信息，再用join()方法转化为字符串
23        
24        MyBrowserType=1;
25       }
26       
27       //检测chrome及版本
28       var chrome = ug.match(/chrome\/\d\.\d/gi);
29       var isChrome = check(/chrome/);
30       if(isChrome) {
31        browserType = "Chrome";
32        //ver = chrome.join(" ").match(/[0-9]/g).join(".");
33        MyBrowserType=2;
34 
35       }
36       
37       //检测firefox及版本
38       var firefox = ug.match(/firefox\/\d\.\d/gi);
39       var isFirefox = check(/firefox/);
40       if(isFirefox) {
41        browserType = "Firefox";
42        ver = firefox.join(" ").match(/[0-9]/g).join(".");  
43        MyBrowserType=3; 
44   }
45      return browserType;
46  }

 1 function GetXmlTextByTagName(xmlDoc,id)
 2 {
 3     var Obj, szTxt = "";
 4     try
 5     {
 6         Obj = xmlDoc.getElementsByTagName(id);
 7         if (typeof(Obj) == "undefined")
 8         {
 9             return szTxt;
10         }
11         else if ((Obj = Obj.item(0)) == null)
12         {
13             return szTxt;
14         }
15         else
16         {
17     
18             if(MyBrowserType==1)
19                 szTxt = Obj.text;
20             else
21                 szTxt = Obj.textContent;
22                 
23         }
24     }
25     catch (objException)
26     {
27     }
28     return szTxt;
29 }