Home/ Questions/Q 6694599
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-26T06:07:14+00:00

When I developed a FB application, I tried to get the canvas used javascript

  • 0

When I developed a FB application, I tried to get the canvas used javascript like below:

Work

document.getElementsByTagName('iframe')[1].id
//Output: iframe_canvas

Not Work

window.frames[1].id
//Output: undefined

I don’t know why, after that I looked for the answers on SO, I found the answer and comment for my issue.

Invoking JavaScript code in an iframe from the parent page

But, I really don’t understand why:

You can’t use “window.frames” if your IFRAME was created programmatically, only if it is declared in the HTML page source. Src @Tomalak‘s comment

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Because browsers have implemented this in such a way. Things like window.frames were never a part of any standard. This is one of the reasons why they are inconsistent and poor sometimes.

    • 0