How to use variable into a IMG SRC?

How to use variable into a IMG SRC?

Hi, I have a small function that gets a URL to a picture, I can get out into the div (full URL).
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var SomeName = $().SomeFunction({
  fieldName: "Picture"
 });
 $(".MyDiv").append(SomeName);



<div class="MyDiv"></div>
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But.. If i want to get my value to become a visible image at the webpage, a real image instead of just the URL, how can I use use the variable into Href, like this:

<img src="<div class="MyDiv"></div>"/>

 
If anybody knows, it would be great!