Should I use js or iframe for a widget?

I don't know the advantages and disadvantages of using them.

开发者_如何学JAVA

I would like to know how they behave differently for

->cookies
->styling
->performance
->ease of use
->ease of implementation
->flexibility
->other pros/cons
->your preference

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If I were you, I would use JS.

JS Pros:-

• No cookie restriction. IE rejects iframe cookies if P3P headers are not set.
• No DOM access restriction. Interacting between JS codes in parent and iframe codes is not easy and needs workarounds. Not beautiful.
• Performance is not a big deal for JS on today's browsers.
• You get more flexibility here, because of first two points.

Which you feel is easier is debatable. I see no cons for JS.