Iframe without src but still has content?

Question

While debugging jquery code on their site ( via chrome developer toolbar)

I noticed that their examples are given under Iframe :

Here - for ex

Answer 1

Try it.

HTML

    Hello World! 
 Hello Again !



    
    

    Try It

JavaScript:

Reference: http://duleekag.blogspot.com/2014/01/html-iframe-without-src-attribute.html