Javascript functions should be written to handle concurrent requests and call back function can be passed as a parameter. Those parameters are passed to AjaxInteraction(URL, callback) object.

Now this is all over stackoverflow but I haven't come across a solution that has worked yet so here goes...

Just trying to get facebook to recognise my og:image pretty simple. Everything outputs with the facebook object debugger except the thumbnail won't show. It does however show the correct url and when the blank thumbnail is clicked it loads the correct image.


Here that code for that:

<meta property="og:title" content="<? echo $product_name; ?>"/>
<meta property="og:type" content="website"/>
<meta property="og:url" content="https://www.domain.com.au/product-tesst.php?id=<? echo $id ?>"/>
<meta property="og:image"content="https://www.domain.com.au/inventory_images/thumb_<? echo $id ?>.jpg"/>
<meta property="og:site_name" content="Biz Name"/>
<meta property="fb:admins" content=""/>
<meta property="og:description" content="<? echo stripslashes($details) ?>"/>

Final variable - Like Constant.
Final method - Can't overridden.
Final class - Can't Inherited by Any other Class

XML : designed to Transport and Store Data.
HTMl: designed to Display Data.
XML : Tages are not Predefined .Defined your Own Tags
HTMl: Tags are predefined.

Sibling Child elements are same level.
Like Children (Brother or Sister).

Other Element.
Text.
attributes
and Combined all of the above.

Attibutes provide Additional Information about an Element.
XMl Attributes must be quoted. it's single or Multiple.

XmlNode.SelectSingleNodes.

XmlNode.SelectNodes.

Using XPath.