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Implementing Ajax with Pure XMLHttpRequest

Source: Internet
Author: User
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1 <!DOCTYPE HTML>2 <HTMLxmlns= "http://www.w3.org/1999/xhtml">3 <Head>4     <Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8" />5     <title></title>6     <Scripttype= "Text/javascript">7         /**8 * Create XMLHttpRequest Objects9         */Ten         functioncreatexhr () { One             varXHR= NULL; A             if(window. XMLHttpRequest) { - XHR= NewXMLHttpRequest (); -             } the             Else { - XHR= NewActiveXObject ("Microsoft.XMLHTTP"); -             } -             returnxhr; +         } -  +         functiontestxhr () { A             varXHR=createxhr (); at Window.alert (XHR); -         } -  -         functiongetservertest () { -             //Get XHR Object -             varXHR=createxhr (); in             //Create request - Xhr.open ("Get", "ajax.ashx", true); to             //Setting the callback function + Xhr.onreadystatechange= function () { -                 if(Xhr.readystate== 4 &&Xhr.status==  $) { the                     //the server has processed the request and correctly responded to the data to the client *                     varResText=Xhr.responsetext; $ document.getElementById ("hh"). InnerText=ResText;Panax Notoginseng                 } -             } the             //4. Sending the request + Xhr.send (NULL); A         } the     </Script> + </Head> - <Body> $     <inputtype= "button"value= "Test Xhr"onclick= "testxhr ()"> $     <H2ID= "hh"></H2> -     <ahref= "Javascript:getservertest ()">Submit data</a> - </Body> the </HTML>

Implementing Ajax with Pure XMLHttpRequest

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