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I have this:
<div class="upload_slide">
<iframe class="upload_iframe" style="visibility:hidden;"></iframe>
</div>
If I then post some files to the iFrame and set .upload_slide to display:none;, while it's loading, will this affect the loading of the iFrame or the detection of when it finished loading?
493
No, the iFrame's loading and load detection should not be compromised by setting the display to none. CSS is just for style, it has no ability to affect the DOM. Setting display:none on an <img> (or any of its parents) will prevent it from loading.
Hide the iframe to all users The solution for hiding the iframe , including help tools users, is to add a aria-hidden='true' attribute on the iframe . The scripts contained in the iframe will always be executed. In addition, you can add a tabindex attribute to prevent the focus from moving in the iframe .
If you are asking about the css display: none then the answer is the video will still be loaded over the mobile network but it would not be visible to the end user.
Display none don't improve the performance because the goal of virtual scrolling is reduce the number of the elements into the dom. Make an element display none or remove an element, trigger a reflow, but with display none you worst the performance because you don't have the benefit of reduce the dom.
No, the iFrame's loading and load detection should not be compromised by setting the display to none.
CSS is just for style, it has no ability to affect the DOM.
113
There shouldn't be a problem but if there is, a good trick can be to move the element offscreen rather than hiding it. You can create a class like
.offscreen{
position: absolute;
left: -5000px;
}
which you can add and remove as needed.
36
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