Member Avatar for muralibobby2015

hello..
i want to write code for refresh only division part which is in page. why because i am fetching images from database randomly. when we refresh the page the image change randomly.
so.....i want to do refresh only division part every 1min. how to do?

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  • Latest Post Latest Post by diafol

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Member Avatar for zortec

You can just use a meta refresh on the page:

<meta http-equiv="refresh" content="60;url=index.php">

The other way to do it would be to use the header function of PHP and put in header('refresh: 60');

Edited by zortec because: n/a
Member Avatar for muralibobby2015

You can just use a meta refresh on the page:

<meta http-equiv="refresh" content="60;url=index.php">

The other way to do it would be to use the header function of PHP and put in header('refresh: 60');

i want to refresh only <div> . not whole page.

Member Avatar for zortec

You can do this with AJAX and JavaScript:

# <script src="ajax/moniter/moniter.js" type="text/javascript"></script>
# <body onload="moniter();">
# <div id="moniter">
#  
#       </div>
# </body
# // JavaScript Document
# var xmlHttp_moniter
#  
# function moniter()
# {
#     xmlHttp_moniter = GetXmlHttpObject_parcel()
#     if(xmlHttp_moniter == null)
#     {
#         alert("browser does not support HTTP Request")
#         return
#     }
#     var url="ajax/moniter/moniter.php" + Math.random()
#     xmlHttp_moniter.onreadystatechange = stateChanged
#     xmlHttp_moniter.open("GET",url,true)
#     xmlHttp_moniter.send(null)
#  
# }
#  
# function stateChanged()
# {
#     if(xmlHttp_moniter.readyState==4 || xmlHttp_moniter.readyState == "complete")
#     {
#         document.getElementById("moniter").innerHTML = xmlHttp_moniter.responseText
#         setTimeout('moniter()',100);
#     }
# }
#  
# function GetXmlHttpObject_parcel()
# {
#     var xmlHttp_moniter=null;
#     try
#     {
#         xmlHttp_moniter=new XMLHttpRequest();
#     }
#     catch (e)
#          {
#              //Internet Explorer
#              try
#               {
#                   xmlHttp_moniter=new ActiveXObject("Msxml2.XMLHTTP");
#               }
#              catch (e)
#               {
#               xmlHttp_moniter=new ActiveXObject("Microsoft.XMLHTTP");
#               }
#          }
#     return xmlHttp_moniter;
# }
Member Avatar for muralibobby2015 
var url="ajax/moniter/moniter.php" + Math.random()

where s moniter.php? i am also practice same example. but no use

Member Avatar for zortec

You will have to change the name of the scripts to what you have. That is just a code example of how to refresh a div tag.

Member Avatar for diafol

SOrry to butt in. The prototype library can ease the use of ajax objects and allow straightforward updating:

Get the prototype library from prototypejs.org and keep it in "scripts" folder.
Create the myajax.js file, also in the scripts folder.

In your page:

<head>
    ...other head elements...
    <script src="/scripts/prototype.js"></script>
    <script src="/scripts/myajax.js"></script>
    <script>var int=self.setInterval("doRefresh()",60000);</script>
</head> 

...other html...

<div id="mydiv">
   
...contents...

</div>

...other html...

Your myajax.js file:

function doRefresh(){
  var url = "/includes/newdata.php";
  var div = "mydiv";
  var oNewRefresh = new Ajax.Updater(div, url,{method: 'post'});
}

Your /includes/newdata.php file:

echo "YAH! @ " . date("H:i:s");

Obviously you'd have something a bit more useful in the php file.

The code has not been checked, so I don't know if it works, but it's not far off.

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