Javascript / Client Side Development


	Epxlorer and AJAX I'm Trying to write a chat width AJAX. For so far it works fine in Firefox browser, The only problem I had is width the Explorer. The function setTimeOut doesn't seem to work well width AJAX. The Explorer turn to the DB only ones. did anyone ever bump into it? Appendix This is the function I used var the_count = 0; function users() { the_timeout = setTimeout('users();', 500); sndReqOutput('' ,'users') the_count += 1; } users(); This is the AJAX part (I didnt write it by myself): function createRequestObject() { var ro; if (window.XMLHttpRequest){ try { ro = new XMLHttpRequest(); } catch(e) { //some kind of a weird mistake...you choose what you want to do ro = false; } } else if(window.ActiveXObject){ try{ ro = new ActiveXObject("Msxml2.HTMLHTTP"); } catch(e) { try{ ro=new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) { //don't know what to do...you choose ro = false; } } } return ro; } var http = createRequestObject(); function sndReqOutput(action, page) { http.open('get', page+'.php?action='+action,true); http.onreadystatechange = output http.send(null); } function output() { if(http.readyState == 4){ var response = http.responseText; document.getElementById('users').innerHTML=response } } Thanking you in anticipation On 11 May, 14:07, work.Yeh@gmail.com wrote: - Hide quoted text - > I'm Trying to write a chat width AJAX. > For so far it works fine in Firefox browser, The only problem I had is > width the Explorer. > The function setTimeOut doesn't seem to work well width AJAX. The > Explorer turn to the DB only ones. > did anyone ever bump into it? > Appendix > This is the function I used > var the_count = 0; > function users() > { > the_timeout = setTimeout('users();', 500); > sndReqOutput('' ,'users') > the_count += 1; > } > users(); > This is the AJAX part (I didnt write it by myself): > function createRequestObject() { > var ro; > if (window.XMLHttpRequest){ > try { > ro = new XMLHttpRequest(); > } catch(e) { > //some kind of a weird mistake...you choose what you want to > do > ro = false; > } > } else if(window.ActiveXObject){ > try{ > ro = new ActiveXObject("Msxml2.HTMLHTTP"); > } catch(e) { > try{ > ro=new ActiveXObject("Microsoft.XMLHTTP"); > } catch(e) { > //don't know what to do...you choose > ro = false; > } > } > } > return ro; > } > var http = createRequestObject(); > function sndReqOutput(action, page) { > http.open('get', page+'.php?action='+action,true); > http.onreadystatechange = output > http.send(null); > } > function output() { > if(http.readyState == 4){ > var response = http.responseText; > document.getElementById('users').innerHTML=response > } > } > Thanking you in anticipation your interval is very small, have you considered server load, having long open connections with a "push" to the client is much more efficient, unlike short open connections repeated often. If you want a true chat application consider using jetty server. On May 11, 3:15 pm, shimmyshack <matt.fa@gmail.com> wrote: - Hide quoted text - > On 11 May, 14:07, work.Yeh@gmail.com wrote: > > I'm Trying to write a chat width AJAX. > > For so far it works fine in Firefox browser, The only problem I had is > > width the Explorer. > > The function setTimeOut doesn't seem to work well width AJAX. The > > Explorer turn to the DB only ones. > > did anyone ever bump into it? > > Appendix > > This is the function I used > > var the_count = 0; > > function users() > > { > > the_timeout = setTimeout('users();', 500); > > sndReqOutput('' ,'users') > > the_count += 1; > > } > > users(); > > This is the AJAX part (I didnt write it by myself): > > function createRequestObject() { > > var ro; > > if (window.XMLHttpRequest){ > > try { > > ro = new XMLHttpRequest(); > > } catch(e) { > > //some kind of a weird mistake...you choose what you want to > > do > > ro = false; > > } > > } else if(window.ActiveXObject){ > > try{ > > ro = new ActiveXObject("Msxml2.HTMLHTTP"); > > } catch(e) { > > try{ > > ro=new ActiveXObject("Microsoft.XMLHTTP"); > > } catch(e) { > > //don't know what to do...you choose > > ro = false; > > } > > } > > } > > return ro; > > } > > var http = createRequestObject(); > > function sndReqOutput(action, page) { > > http.open('get', page+'.php?action='+action,true); > > http.onreadystatechange = output > > http.send(null); > > } > > function output() { > > if(http.readyState == 4){ > > var response = http.responseText; > > document.getElementById('users').innerHTML=response > > } > > } > > Thanking you in anticipation > your interval is very small, have you considered server load, having > long open connections with a "push" to the client is much more > efficient, unlike short open connections repeated often. > If you want a true chat application consider using jetty server.- Hide quoted text - > I don't understand. :( What do you mean by 'server load'? What is 'Jetty Server'? Do you mean using different language then JS and PHP? I'm sorry. maybe it's because of my English (I'm an Israelian), Or becuase I'm not familiar enough with javascript(I'm quite new ). Please exlain to me thank you On May 11, 3:23 pm, work.Yeh@gmail.com wrote: - Hide quoted text - > On May 11, 3:15 pm, shimmyshack <matt.fa@gmail.com> wrote: > > On 11 May, 14:07, work.Yeh@gmail.com wrote: > > > I'm Trying to write a chat width AJAX. > > > For so far it works fine in Firefox browser, The only problem I had is > > > width the Explorer. > > > The function setTimeOut doesn't seem to work well width AJAX. The > > > Explorer turn to the DB only ones. > > > did anyone ever bump into it? > > > Appendix > > > This is the function I used > > > var the_count = 0; > > > function users() > > > { > > > the_timeout = setTimeout('users();', 500); > > > sndReqOutput('' ,'users') > > > the_count += 1; > > > } > > > users(); > > > This is the AJAX part (I didnt write it by myself): > > > function createRequestObject() { > > > var ro; > > > if (window.XMLHttpRequest){ > > > try { > > > ro = new XMLHttpRequest(); > > > } catch(e) { > > > //some kind of a weird mistake...you choose what you want to > > > do > > > ro = false; > > > } > > > } else if(window.ActiveXObject){ > > > try{ > > > ro = new ActiveXObject("Msxml2.HTMLHTTP"); > > > } catch(e) { > > > try{ > > > ro=new ActiveXObject("Microsoft.XMLHTTP"); > > > } catch(e) { > > > //don't know what to do...you choose > > > ro = false; > > > } > > > } > > > } > > > return ro; > > > } > > > var http = createRequestObject(); > > > function sndReqOutput(action, page) { > > > http.open('get', page+'.php?action='+action,true); > > > http.onreadystatechange = output > > > http.send(null); > > > } > > > function output() { > > > if(http.readyState == 4){ > > > var response = http.responseText; > > > document.getElementById('users').innerHTML=response > > > } > > > } > > > Thanking you in anticipation > > your interval is very small, have you considered server load, having > > long open connections with a "push" to the client is much more > > efficient, unlike short open connections repeated often. > > If you want a true chat application consider using jetty server.- Hide quoted text - > > > I don't understand. :( > What do you mean by 'server load'? > What is 'Jetty Server'? > Do you mean using different language then JS and PHP? > I'm sorry. maybe it's because of my English (I'm an Israelian), Or > becuase I'm not familiar enough with javascript(I'm quite new ). > Please exlain to me > thank you- Hide quoted text - > jetty server, please see: http://sourceforge.net/project/showfiles.php?group_id=7322 there is an ajax chat application, try it and you will see the difference. (when one of you clicks enter, the other sees the data immediately) server load - a request every 500ms? are you sure that your server can respond that quickly before being asked again, then think there will be two of you to chat, that's 4 requests a second. You are pushing at the limit of what's possibly unless you are local, the data itself will take time to travel from server<->browser making the time interval too small in my opinion.

Javascript / Client Side Development

Epxlorer and AJAX