I am new for Mraid . I have read all the documents for Mraid which is provided by IAB. It's unclear.
Currently I have created one static HTML Page and custom functions . The custom functions is calling Mraid predefine functions from mraid.js which is already included in html page <script src="mraid.js"></script>. 
For example:
function playVideo(url) // Custom function
{
                mraid.playVideo(url); // Mraid predefine function 
}
My questions is:
- How we will get dynamic images/ anchor link ? 
- The server (Spotxhchange, admob) will return the data in json format / xml format / html page ? 
 
                        
I'm not sure I understand your question but in general, you can place whatever html or javascript code you would normally include in a web page, into your MRAID tag.
For example, the following tag will display the IAB logo in your ad:
If this isn't what you meant please clarify further.