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    Form's iframe height is constantly recalculated on iOS

    Asked by webstudent_suu on October 14, 2016 at 01:07 PM

    In Safari for iOS 10, the form on our page constantly recalculates its iframe height, causing the bottom of the page to jiggle up and down. It has happened on multiple iPhones. It does not happen on iOS 9. It does not happen on other form pages on our site (such as https://www.suu.edu/testing-center/testing-intake.html).

    I connected Safari for Mac to my iPhone so I could try to debug the issue. As far as I can tell, it comes down to the condition check `window.parent != window` on line 3608 of jotform.forms.js (the `iframeHeightCaller` function). This condition shows that `window.parent` IS equal to `window` when the issue is expressed. I have no idea why this happens.

    Please look into this and let me know if I can help debug this further.

    Thank you,

    Tyler Mumford
    Southern Utah University

    Page URL:
    http://suu.edu/graduatestudies/contact.html

    iOS 10 mobile form
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    JotForm Support

    Answered by Mike on October 14, 2016 at 03:52 PM

    Thank you for contacting us.

    Is this issue still happening? I do not have an iOS device to test this, but when I check with simulator app via https://www.browserstack.com your embedded form seems to be working properly.

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    Answered by webstudent_suu on November 04, 2016 at 01:22 PM

    Yes, the issue is still happening. I accidentally created two posts for this issue; see https://www.jotform.com/answers/961337-Form-s-iframe-height-is-constantly-recalculated.

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    JotForm Support

    Answered by Mike on November 04, 2016 at 04:04 PM

    Your second thread has been updated. Thank you.