satishgaudo.com » Javascript http://satishgaudo.com/satblog Understanding technology Thu, 26 Aug 2010 06:27:18 +0000 http://wordpress.org/?v=2.8.1 en hourly 1 jquery-oembed: http://satishgaudo.com/satblog/2010/06/30/jquery-oembed/ http://satishgaudo.com/satblog/2010/06/30/jquery-oembed/#comments Wed, 30 Jun 2010 11:12:51 +0000 satishgaudo http://satishgaudo.com/satblog/?p=221

A simple jQuery plugin that uses OEmbed API to help displaying embedded content (such as photos or videos) in your website.

This plugin can be downloaded from google code base code.google.com

http://satishgaudo.com/satblog/ext_img/oEmbed/index.html

Quick explicit example:

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>jquery-oembed explicit insert example</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/
jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="jquery.oembed.js"></script>
</head>
<body>
<script type="text/javascript">
$(document).ready(function() {
 $("#container").oembed("http://www.flickr.com/photos/
14516334@N00/345009210/");
});
</script>
<div id="container"></div>
</body>
</html>

In  this example the div#container will display the photo from flickr.
]]> http://satishgaudo.com/satblog/2010/06/30/jquery-oembed/feed/ 0 Use GET for AJAX Requests http://satishgaudo.com/satblog/2009/07/21/use-get-for-ajax-requests/ http://satishgaudo.com/satblog/2009/07/21/use-get-for-ajax-requests/#comments Tue, 21 Jul 2009 14:40:24 +0000 satishgaudo http://satishgaudo.com/satblog/2009/07/21/use-get-for-ajax-requests/

The Yahoo! Mail team found that when using XMLHttpRequest, POST is implemented in the browsers as a two-step process: sending the headers first, then sending data. So it’s best to use GET, which only takes one TCP packet to send (unless you have a lot of cookies). The maximum URL length in IE is 2K, so if you send more than 2K data you might not be able to use GET.

An interesting side affect is that POST without actually posting any data behaves like GET. Based on the HTTP specs, GET is meant for retrieving information, so it makes sense (semantically) to use GET when you’re only requesting data, as opposed to sending data to be stored server-side.

Source: Best Practices for Speeding Up Your Web Site

]]> http://satishgaudo.com/satblog/2009/07/21/use-get-for-ajax-requests/feed/ 1 Calling Ajax script on onscroll event of an element: http://satishgaudo.com/satblog/2009/07/17/calling-ajax-script-on-onscroll-event-of-an-element/ http://satishgaudo.com/satblog/2009/07/17/calling-ajax-script-on-onscroll-event-of-an-element/#comments Fri, 17 Jul 2009 09:26:36 +0000 satishgaudo http://satishgaudo.com/satblog/?p=50

In the example below element “adListContainer” is an div, on onscroll event of which an ajax function
is called to load the next set of records.
It is required that the function be called only at the end of scrolling or scroll bottom.

       var oAdList = document.getElementById("adListContainer");
 
	var iVisibleHeight = oAdList.clientHeight;
	var iScrollableHeight = oAdList.scrollHeight;
	var iScrollTop = oAdList.scrollTop;
	if((iScrollTop+iVisibleHeight) == iScrollableHeight){
	      // call the ajax function to load the next set of ads 
		showNextSetofAds();
        }
]]> http://satishgaudo.com/satblog/2009/07/17/calling-ajax-script-on-onscroll-event-of-an-element/feed/ 0 function to check for valid date http://satishgaudo.com/satblog/2009/06/14/function-to-check-for-valid-date/ http://satishgaudo.com/satblog/2009/06/14/function-to-check-for-valid-date/#comments Sat, 13 Jun 2009 19:00:27 +0000 satishgaudo http://satishgaudo.com/satblog/?p=4 

function validDate(sDatePassed) {
 //if the date is in dd/mm/yyyy format then valid date returns 1else 0 
if (sDatePassed.length > 0) {
aDate = sDatePassed.split("/");
if (aDate.length != 3) return(0); 		if (aDate[1].length == 1) aDate[1]= "0"+aDate[1];
var iLeapyear = 0;
// check whether the year is leap year - aleap year is div by 4 ,100, 400
if ((aDate[2] % 4) == 0) {
if ((aDate[2] % 100) == 0) {
if ((aDate[2] % 400) == 0) {
iLeapyear = 1;
}
}
}
if (aDate[2].length != 4) {
return(0);
} else if (isNaN(aDate[2])) {
return(0);
} else if (aDate[2] < 0) {
return(0);
} else if ((aDate[1].length == 0) || (aDate[1].length > 2)) {
return(0);
} else if (isNaN(aDate[1])) {
return(0);
} else if ((aDate[1] <= 0) || (aDate[1] > 12)) {
return(0);
} else if ((aDate[0].length == 0) || (aDate[0].length > 2)) {
return(0);
} else if (isNaN(aDate[0])) {
return(0);
} else if (aDate[0] <= 0) {
return(0);
} else if ((iLeapyear == 1) && (aDate[1] == 02) && (aDate[0] > 29)) {
return(0);
} else if ((iLeapyear == 0) && (aDate[1] == 02) && (aDate[0] > 28)) {
return(0);
} else if (((aDate[1] == '01') || (aDate[1] == '03') || (aDate[1] == '05') || (aDate[1] == '07') || (aDate[1] == '08') ||(aDate[1] == '10') || (aDate[1] == '12')) && (aDate[0] > '31')) {
return(0);
} else if (((aDate[1] == '04') || (aDate[1] == '06') || (aDate[1] == '09') || (aDate[1] == '11')) && (aDate[0] >'30')) { return(0); } return 1; } else {
 return(1);
}
}// EOF validDate
]]> http://satishgaudo.com/satblog/2009/06/14/function-to-check-for-valid-date/feed/ 0