JavaScript - Auto Scoll Up, Or Refresh To Top Needed

Hey helpful people.

I'm looking for a better solution to refreshing a page of mine, which currently single page (no frames) using meta refresh. To convert it something where it (using frames) would either:

a. keep trying to refresh untill a var is recieved from the content, or
b. present the browser with a button to refresh and a message that loading failed.

But honestly i am a noob at javascript, to an extend i dont have much idea where to start on such a project. but learned this is not possible with regular html that is widely supported anyways.

i suspect the:..

window.xx.location='url'

..is useful in this regard, but other than that i am blank on where to start.

Any help is appresiated.

Thanks in advance
Jilli

If you go to a Youtube video by Justin Bieber or Rebecca Black, comments are constantly being posted and it seems like the autorefresh for the comments kicks in every half second. I don't plan on having millions of users viewing my page, but still, wouldn't having every user make a [mysql] request to the server every half second really take a toll on the server (especially since I don't plan to ever have the resources that Youtube has)? Facebook also seems to have instantaneous auto-refreshes, be it in comment boxes or their chat interface.

So what would be the best method to implement a near-instantaneous autorefresh system with minimal resource usage?

I'm using meta refresh to refresh my web page. I have a small compose email window that appears via ajax when the user clicks on a name.

Is there a way I can disable the screen refresh in my ajax code while they are composing their message?

I've a web page when a user logs in, it will have a link that shows the "username" and a link for "logout".

After the user logs out, the "username" and the "logout" links will change to "login" and "register" links, respectively.

The page uses javascript to check a user cookie, if the user cookie exists, it will show the "username" link and the link for "logout". If no user cookie exists, "login" and "register" links will replace the "username" and "logout" links.

Here's the problem: When a user who has log in, clicks the "logout" link, a perl script will delete the user cookie, and redirects back to the same page. The page does not show "login" and "register" links AUTOMATICALLY. Both links will appear ONLY after the user MANUALLY Refreshes the page.

It appears that I need a system to refresh the page automacally ONLY one time. How can this be done?

A noob needs some help.

I'm using a combination of Yahoo Pipes and rssdisplayer.js to display some snippets from several RSS feeds on a new site I'm building.

The trouble I'm having is that (i) the feeds don't update when I refresh the page, I think because a cached version of the page is being loaded, and (ii) I'd like to have the div containing the feeds auto-refresh at a given time interval.

I've got a Twitter javascript working that does both these things, but can't work out how to get the rssdisplayer.js working this way.

The rssdisplayer code is:

Code:

google.load("feeds", "1") //Load Google Ajax Feed API (version 1)

function rssdisplayer(divid, url, feedlimit, showoptions){
this.showoptions=showoptions || "" //get string of options to show ("date" and/or "description")
var feedpointer=new google.feeds.Feed(url) //create new instance of Google Ajax Feed API
feedpointer.setNumEntries(feedlimit) //set number of items to display
document.write('<div id="'+divid+'">Loading feed...</div>')
this.feedcontainer=document.getElementById(divid)
var displayer=this
feedpointer.load(function(r){displayer.formatoutput(r)}) //call Feed.load() to retrieve and output RSS feed
}


rssdisplayer.prototype.formatdate=function(datestr){
var itemdate=new Date(datestr)
return "<span style='color:gray; font-size: 90%'>"+itemdate.toLocaleString()+"</span>"
}


rssdisplayer.prototype.formatoutput=function(result){
if (!result.error){ //if RSS feed successfully fetched
var thefeeds=result.feed.entries //get all feed entries as a JSON array
var rssoutput="<ul>"
for (var i=0; i<thefeeds.length; i++){ //loop through entries
var itemtitle="<a href=\"" + thefeeds[i].link + "\">" + thefeeds[i].title + "</a>"
var itemdate=/date/i.test(this.showoptions)? this.formatdate(thefeeds[i].publishedDate) : ""
var itemdescription=/description/i.test(this.showoptions)? "<br />"+thefeeds[i].content : ""
rssoutput+="<li>" + itemtitle + " " + itemdate + itemdescription + "</li>"
}
rssoutput+="</ul>"
this.feedcontainer.innerHTML=rssoutput
}
else //else, output error
alert("Error fetching feeds: "+result.error.message)
}

//USAGE SYNTAX: new rssdisplayer("divid", "rssurl", numberofitems, "displayoptions")
//new rssdisplayer("adiv", "http://www.cssdrive.com/index.php/news/rss_2.0/", 5, "date, description")

I currently have this on my companies website and it's having a bit of trouble sometimes where it will only work after a refresh. Is it possible to do a refresh of this div and script as soon as the site loads, instead of using the auto refresh. I tried using auto refresh and it works but whatever time interval I put for the auto refresh is the time that the script pops up, so it kind of just makes it worst.

Code:

<script type="text/javascript">
		
	
			$(document).ready(function() {
				$("#twitter").getTwitter({
					userName: "lubellrosen",
					numTweets: 4,
					loaderText: "Loading Events...",
					slideIn: true,
					slideDuration: 750,
					showHeading: false,
					headingText: "Latest Tweets",
					showProfileLink: false,
					showTimestamp: false
				});
			});

		</script>

Guy help me for the solution...

how to refresh the markers only every x...

below are my full scripts....
Code:

<?php
define('INCLUDE_CHECK',1);
include "dbconnect.php";
?>
<!DOCTYPE html>
<html lang="en">
    <head>
                <script type="text/javascript" src="host_entry/js/jquery-1.7.1.min.js"></script>

                <!-- Google Map JS -->
                <script src="http://maps.google.com/maps/api/js?key=AIzaSyDY0kkJiTPVd2U7aTOAwhc9ySH6oHxOIYM&sensor=false" type="text/javascript"></script>

</head>
                        <div id="map_canvas" style="top:55px;left:13px;"> <!-- Map will display -->
                        <div id="map"> <!-- Fullscreen Loading & Fullscreen Buttons area -->
                        </div> 
                        <!-- Fullscreen Loading & Fullscreen Buttons area Ends -->
            </div><!-- Map Ends display -->
        
<script type="text/javascript">
/**function show_data()
{
        $('#map').load('index.php');
}
setInterval('show_data()', 60000);
**/

var locations = [
                <?php
                        $query="SELECT * from host_entry";
                        $result=mysql_query($query)or die(mysql_error());
{ 
                        
                                if ($num=mysql_numrows($result)) 
 {
                                        $i=0;

                                        while ($i < $num) 
        {
                                                $id=mysql_result($result,$i,"id");
                                                //$host_type=mysql_result($result,$i,"host_type");                                              
                                                $host_name=mysql_result($result,$i,"host_name");
                                                $host_server=mysql_result($result,$i,"host_server");
                                                $host_status=mysql_result($result,$i,"host_status");
                                                $host_lapt=mysql_result($result,$i,"host_lapt");
                                                $host_long=mysql_result($result,$i,"host_long");
                                                $host_circuit=mysql_result($result,$i,"host_circuit");
                                                $host_hotline=mysql_result($result,$i,"host_hotline");
                                                
        if($host_status==0) 
            echo "['<div class=container style=width:400px;><div class=page-header><h4>$host_name</h4></div>', $host_lapt, $host_long],";
                                                $i++;
                        
        }
 }else {
                        echo "<h3 align='center'><font color='#ff0000'>No Content Found</font></h3>";
       }
}
                ?>
];
    // Setup the different icons and shadows
    var iconURLPrefix = 'host_entry/img/'; 

    var icons = [  
          iconURLPrefix + 'p_red_alert.png'
    ]
        var icons_length = icons.length;

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: -5,
          center: new google.maps.LatLng(3.1215681, 101.71180140000001),
      mapTypeId: google.maps.MapTypeId.ROADMAP,
      mapTypeControl: false,
      streetViewControl: false,
      disableDefaultUI: true,
      panControl: false,
      zoomControlOptions: {
      position: google.maps.ControlPosition.LEFT_BOTTOM
      }
    });

    var marker;
    var markers = new Array();
    
    var iconCounter = 0;

    var infowindow = new google.maps.InfoWindow({
      maxWidth: 400,
          maxHeight: 350,
          
    });
                
    // Add the markers and infowindows to the map
    for (var i = 0; i < locations.length; i++) {  

      marker = new google.maps.Marker({
        position: new google.maps.LatLng(locations[i][1], locations[i][2], locations[i][3], locations[i][4], locations[i][5]),
        map: map,
                animation: google.maps.Animation.BOUNCE,
        icon : icons[iconCounter],
      });

      markers.push(marker);

      google.maps.event.addListener(marker, 'click', (function(marker, i) {
        return function() {
          infowindow.setContent( 
                                                                locations[i][0]
                                                           );
          infowindow.open(map, marker);
                  
                setTimeout(function(){infowindow.close();}, '5000');
        }
      })(marker, i));
          
      iconCounter++;
      // We only have a limited number of possible icon colors, so we may have to restart the counter
      if(iconCounter >= icons_length){
        iconCounter = 0;
      }
    }
         
    function AutoCenter() {
      //  Create a new viewpoint bound
      var bounds = new google.maps.LatLngBounds();
      //  Go through each...
      $.each(markers, function (index, marker) {
        bounds.extend(marker.position);
      });
      //  Fit these bounds to the map
      map.fitBounds(bounds);
    }
    AutoCenter();

  </script> 
    </body>
</html>

do i need to apply setInterval on the marker?
how to apply it on the marker so it refresh every X second...

please help for the solution....

Most of the Javascript I see has some sort of time limit on page reload and is not really what I am trying to accomplish:
Code:

<meta http-equiv="Refresh"
  content="10; URL=http://coffeeandtealtd.com/buynow.html" />

I am trying to make our buy page reload after clicking the Paypal "continue shopping" button in Paypal Website Standards. The pop up Paypal shopping cart window closes after clicking the button but our buy page doesn't reload. It doesn't reload in Safari although it seems to be fine in FF and IE. I am new to javascript coding and am not quite sure how to make the page reload in this specific instance only. Any sug's??

I'm attaching my php test file but this is a JS problem. When I scroll down in the web page and the meta refresh hits, in Windows Safari and IE6/7/8 browsers, the web page re-positions back to the top. In Opera and FF the page refreshes but it stays where it is.

Can someone look at my test script and see why it is not working in IE and Win Safari? My goal is to have the web page not re-position to the top on the auto refresh.

Thanks...

I have a php file lets say file1.php, that printing a variable, its dynamic numbers output that already always increasing, like private message numbers that coming or others :

PHP Code:
<?php
echo $variable
?>



i want to put that variable output, in another files page title, lets say file2.php or file3.html,
in the front of the another files page titles, and auto refresh every x seconds, maybe like this :

Quote:
(1) - another text in the page title
after x seconds, get a private message
Quote:
(2) - another text in the page title
after another x seconds, get another private message
Quote:
(3) - another text in the page title




or its ok if just like this, only the variable, without the another text in the page title
Quote:
(1)




please share your knowledge to make it, maybe using javascript, jquery or others

Hi, I'm trying to add the total number of costs depending on the rows added to return the subtotal then later add the service charge which gives the total grand amount.

I also need to add the item number when a new row is added.

Can any1 help?

Code:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<title>untitled</title>

<script type="text/javascript">
		function addRow(tableID) {

			var table = document.getElementById(tableID);

			var rowCount = table.rows.length;
			var row = table.insertRow(rowCount);

			var colCount = table.rows[0].cells.length;

			for(var i=0; i<colCount; i++) {

				var newcell	= row.insertCell(i);

				newcell.innerHTML = table.rows[0].cells[i].innerHTML;
				//alert(newcell.childNodes);
				switch(newcell.childNodes[0].type) {
					case "text":
							newcell.childNodes[0].value = "";
							break;
					case "checkbox":
							newcell.childNodes[0].checked = false;
							break;
					case "select-one":
							newcell.childNodes[0].selectedIndex = 0;
							break;
				}
			}
		}

		function deleteRow(tableID) {
			try {
			var table = document.getElementById(tableID);
			var rowCount = table.rows.length;

			for(var i=0; i<rowCount; i++) {
				var row = table.rows[i];
				var chkbox = row.cells[0].childNodes[0];
				if(null != chkbox && true == chkbox.checked) {
					if(rowCount <= 1) {
						alert("Cannot delete all the rows.");
						break;
					}
					table.deleteRow(i);
					rowCount--;
					i--;
				}


			}
			}catch(e) {
				alert(e);
			}
		}


</script>

</head>
<body >
<form action="#" id="calcForm" method="post">
            <table border="0" width="680" cellpadding="0" cellspacing="0">
                <tr>
                    <td width="60" align="left" valign="top"><b>Item No</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="290" align="left" valign="top"><b>Description</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="210" align="left" valign="top"><b>Part No.</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="50" align="left" valign="top"><b>QTY</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="63" align="left" valign="top"><b>Cost</b></td>
                </tr>
            </table>
            <table id="parts" border="0" width="680" cellpadding="0" cellspacing="0">
                <tr>
                    <td width="60" align="left" valign="top"><INPUT type="checkbox" name="chk"/>&nbsp;<b>1</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="290" align="left" valign="top">
                        <input type="text" name="partdesc[]" size="40" value="<?=$info['partdesc'][$x]?>">
                    </td>
                    <td width="3">&nbsp;</td>
                    <td width="210" align="left" valign="top">
                        <input type="text" name="partno[]" size="30" value="<?=$info['partno'][$x]?>">
                    </td>
                    <td width="3">&nbsp;</td>
                    <td width="50" align="left" valign="top">
                        <input type="text" name="qty[]" size="2" value="<?=$info['qty'][$x]?>">
                    </td>
                    <td width="3">&nbsp;</td>
                    <td width="63" align="left" valign="top">
                        <input type="text" name="cost[]" size="4" value="<?=$info['cost'][$x]?>">
                    </td>
                </tr>
            </table>
            <table id="parts" border="0" width="680" cellpadding="0" cellspacing="0">
                <tr>
                    <td width="60" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="290" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="210" align="left" valign="top"><b>Sub Total</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="50" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="63" align="left" valign="top">
                        <input type="text" name="subtotal" size="4" value="<?=$info['subtotal']?>">
                    </td>
                </tr>
                <tr>
                    <td width="60" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="290" align="left" valign="top"><INPUT type="button" value="Add Row" onclick="addRow('parts')" /><INPUT type="button" value="Delete Row" onclick="deleteRow('parts')" /></td>
                    <td width="3">&nbsp;</td>
                    <td width="210" align="left" valign="top"><b>Service Charge</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="50" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="63" align="left" valign="top">
                        <input type="text" name="charge" size="4" value="<?=$info['charge']?>">
                    </td>
                </tr>
                <tr>
                    <td width="60" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="290" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="210" align="left" valign="top"><b>Grand Total</b></td>
                    <td width="3">&nbsp;</td>
                    <td width="50" align="left" valign="top">&nbsp;</td>
                    <td width="3">&nbsp;</td>
                    <td width="63" align="left" valign="top">
                        <input type="text" name="gtotal" size="4" value="<?=$info['gtotal']?>">
                    </td>
                </tr>
            </table>

</form>
</body>
</html>

Hi,

I have the below code:
Code:

<script type="text/javascript">
function loadQuickMessageCheck(File,ID){

var xmlhttp; 

if (window.XMLHttpRequest)  {
  xmlhttp=new XMLHttpRequest();
  }
else {
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }

xmlhttp.onreadystatechange=function(){
  if (xmlhttp.readyState==4 && xmlhttp.status==200){
    document.getElementById(ID).innerHTML=xmlhttp.responseText;
	 eucalyptus = setInterval(function(){loadQuickMessageCheck(File,ID)},20000);
    }
  }

xmlhttp.open("POST",File,true);
xmlhttp.send();
}
</script>

But I am overloading the server and crashing it. I've googled the issue and have found people with similar problems who talk about the need to cancel the last refresh request before they send the next refresh.

I even found this nice piece of code which worked for someone else.
Quote:

try{window.clearTimeout(tRefresh)} catch(err) {}
tRefresh = setInterval(setContext, varInterval*60*1000);
}
I am not sure if this is the solution that I am looking for but if it is all my attempts at applying this code has been a bit of a disaster.

Hello,

I don't know if this can be done in Javascript, or requires any other language but i was wondering if this would be possible.

I would like to embed this Javascript code in to a PHP file and then for it to run automatically upon the PHP file loading:

Code:

<td class="smallDesc"> <a name="fb_share" type="button_count" href="http://www.facebook.com/sharer.php">Share</a><script src="http://static.ak.fbcdn.net/connect.php/js/FB.Share" type="text/javascript"></script> </td>

The Javascirpt is the Facebook Share button that basically allows users that have Facebook to share the page there currently on in their Facebook status by pressing the button, but if there not logged in it shows the login page, not a problem just continue the script.

The current button i which is what i want to load automatically in the PHP file is located here, to test the functionalilty just click "Share" button in blue..

http://watch-movies-online.anyfilman...-Movie-17.html

To summarise, i would like the above Javascript code to execute automatically upon pageload of this PHP file.. http://www.watch-movies-online.anyfi...p://google.com.

If that could be done, and if this also is possible.. i would like for the "Share" button on the external page that is loaded from the Javascript code above to be clicked automatically so in effect when ever someone visits the PHP page after clicking "Click Here to Watch/Stream 2012 Online For Free" on this page it will automatically load the Facebook Share box, and automatically click the "Share" Button and then close the page if possible, but not required.

Please feel free to ask any questions, i'll be happy to answer.

Thanks in advance.

Best Regards,
Jonathan.

Hi

I need some help. I have a link that opens in a new window which allows the user to perform an update to a record. On submit I want it to obviously update (which it does), then close the page and update the main page (where we opened the link from initially).

I seem to have this working using an function which is called off the submit button using onclick........the function is:

<script type="text/javascript">
function windowclose() {
window.opener.location.href = window.opener.location.href;
window.close()
}
</script>


Now, the update happens as I say, and the page closes, and the main page looks like it refreshes but the update is not reflected....if I hit f5 the update appears. Is it to do with the speed of writing to the database and updating the screen? I have also been playing around with trying to add a settimeout to add a delay between update and close/refresh but couldnt get it to work.

Any help would be appreciated.

Cheers!

Hi Frnds,

I have faced some problem i.e I have 2 jsp pages.In that I want to go one jsp to another jsp.In 2nd jsp i can show my captcha code,but unfortunately it is not visible first page is reloaded in IE6.Once you refresh the page it's visible in IE6.So please help me to avoid this problem.

Thanks,