javascript - How to create a CodePen pen with an iframe that references the same pen? -


i need create html code examples on codepen different html techniques. each example should 1 code pen, there's example heading outlines, forms, , 1 iframes.

the problems iframes example i'd have both content parent , embedded page in same pen. possible somehow?

<p>welcome iframe example</p> <iframe src="?frame=1" title="the iframe">

i think somehow decide whether show parent or embedded stuff when reading var frame, what's way that? or see better way this?

i know codepen allows embedded ruby code when using slim template (which do).

pseudo code (ruby/slim style):

- if get['frame']   p iframe content - else   p welcome iframe example   iframe src="?frame=1" title="the iframe"

but don't have idea whether possible using embedded ruby: codepen offer global vars get, or other way suitable need?


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