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Why does FIrefox DOM reorder outside of

and add new DOM element? Chrome does not exhibit this behaviour


Creating a new DOM element from an HTML string using built-in DOM methods or PrototypeHow to add a class to DOM element in JavaScript?Does Firefox support position: relative on table elements?Why does jQuery or a DOM method such as getElementById not find the element?Why does CSS work with fake elements?Cannot display HTML stringCan a label be placed separately from the form element it controls?HTML label with different behaviour on SafariIn Google Chrome, NVDA (Accessibility Screen Reader) Does Not Read Text in Bootstrap Modal DialogWhy does Chrome squish my text when I flex a parent container?






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








-2















Firefox DOM re-arranges the first <dialog> to outside and below the </p> and adds an empty <p></p> below it. This is not happening in Chrome/Vivaldi.



Is this normal behaviour?



<!DOCTYPE html>
<html>
<head>
<style>
.note-toggle:checked ~ .note-content display: block;
</style>
</head>

<body>

<p>
Here's a paragraph
<span><label for="note" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note" class="note-toggle" style="display: none;">
<dialog class="note-content">
This is moved outside of the &lt;p>&lt;/p> in Firefox DOM and an extra &lt;p>&lt;/p> added below in DOM. Works fine in Chrome.
</dialog>
</span>
</p>


<div>
Here is another paragraph
<span><label for="note2" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note2" class="note-toggle" style="display: none;">
<dialog class="note-content">
Works fine if &lt;div> or &lt;span> or nothing is used. Also works fine in Chrome.
</dialog>
</span>
</div>

</body>
</html>


Firefox DOM Result










share|improve this question


























  • This HTML is invalid and browsers will only do the best they can guessing your intention. Fix your HTML.

    – Rob
    Mar 27 at 11:26












  • https://caniuse.com/#search=dialog

    – Sfili_81
    Mar 27 at 11:29











  • @Sfili_81 Great resource, thank you.

    – HTMLFiver
    Mar 27 at 13:26

















-2















Firefox DOM re-arranges the first <dialog> to outside and below the </p> and adds an empty <p></p> below it. This is not happening in Chrome/Vivaldi.



Is this normal behaviour?



<!DOCTYPE html>
<html>
<head>
<style>
.note-toggle:checked ~ .note-content display: block;
</style>
</head>

<body>

<p>
Here's a paragraph
<span><label for="note" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note" class="note-toggle" style="display: none;">
<dialog class="note-content">
This is moved outside of the &lt;p>&lt;/p> in Firefox DOM and an extra &lt;p>&lt;/p> added below in DOM. Works fine in Chrome.
</dialog>
</span>
</p>


<div>
Here is another paragraph
<span><label for="note2" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note2" class="note-toggle" style="display: none;">
<dialog class="note-content">
Works fine if &lt;div> or &lt;span> or nothing is used. Also works fine in Chrome.
</dialog>
</span>
</div>

</body>
</html>


Firefox DOM Result










share|improve this question


























  • This HTML is invalid and browsers will only do the best they can guessing your intention. Fix your HTML.

    – Rob
    Mar 27 at 11:26












  • https://caniuse.com/#search=dialog

    – Sfili_81
    Mar 27 at 11:29











  • @Sfili_81 Great resource, thank you.

    – HTMLFiver
    Mar 27 at 13:26













-2












-2








-2


1






Firefox DOM re-arranges the first <dialog> to outside and below the </p> and adds an empty <p></p> below it. This is not happening in Chrome/Vivaldi.



Is this normal behaviour?



<!DOCTYPE html>
<html>
<head>
<style>
.note-toggle:checked ~ .note-content display: block;
</style>
</head>

<body>

<p>
Here's a paragraph
<span><label for="note" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note" class="note-toggle" style="display: none;">
<dialog class="note-content">
This is moved outside of the &lt;p>&lt;/p> in Firefox DOM and an extra &lt;p>&lt;/p> added below in DOM. Works fine in Chrome.
</dialog>
</span>
</p>


<div>
Here is another paragraph
<span><label for="note2" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note2" class="note-toggle" style="display: none;">
<dialog class="note-content">
Works fine if &lt;div> or &lt;span> or nothing is used. Also works fine in Chrome.
</dialog>
</span>
</div>

</body>
</html>


Firefox DOM Result










share|improve this question
















Firefox DOM re-arranges the first <dialog> to outside and below the </p> and adds an empty <p></p> below it. This is not happening in Chrome/Vivaldi.



Is this normal behaviour?



<!DOCTYPE html>
<html>
<head>
<style>
.note-toggle:checked ~ .note-content display: block;
</style>
</head>

<body>

<p>
Here's a paragraph
<span><label for="note" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note" class="note-toggle" style="display: none;">
<dialog class="note-content">
This is moved outside of the &lt;p>&lt;/p> in Firefox DOM and an extra &lt;p>&lt;/p> added below in DOM. Works fine in Chrome.
</dialog>
</span>
</p>


<div>
Here is another paragraph
<span><label for="note2" class="noteLabel"><sup>Note</sup></label>
<input type="checkbox" id="note2" class="note-toggle" style="display: none;">
<dialog class="note-content">
Works fine if &lt;div> or &lt;span> or nothing is used. Also works fine in Chrome.
</dialog>
</span>
</div>

</body>
</html>


Firefox DOM Result







html css html5 firefox dom






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Mar 27 at 13:37









Ed Cottrell

38.7k12 gold badges60 silver badges84 bronze badges




38.7k12 gold badges60 silver badges84 bronze badges










asked Mar 27 at 11:23









HTMLFiverHTMLFiver

13 bronze badges




13 bronze badges















  • This HTML is invalid and browsers will only do the best they can guessing your intention. Fix your HTML.

    – Rob
    Mar 27 at 11:26












  • https://caniuse.com/#search=dialog

    – Sfili_81
    Mar 27 at 11:29











  • @Sfili_81 Great resource, thank you.

    – HTMLFiver
    Mar 27 at 13:26

















  • This HTML is invalid and browsers will only do the best they can guessing your intention. Fix your HTML.

    – Rob
    Mar 27 at 11:26












  • https://caniuse.com/#search=dialog

    – Sfili_81
    Mar 27 at 11:29











  • @Sfili_81 Great resource, thank you.

    – HTMLFiver
    Mar 27 at 13:26
















This HTML is invalid and browsers will only do the best they can guessing your intention. Fix your HTML.

– Rob
Mar 27 at 11:26






This HTML is invalid and browsers will only do the best they can guessing your intention. Fix your HTML.

– Rob
Mar 27 at 11:26














https://caniuse.com/#search=dialog

– Sfili_81
Mar 27 at 11:29





https://caniuse.com/#search=dialog

– Sfili_81
Mar 27 at 11:29













@Sfili_81 Great resource, thank you.

– HTMLFiver
Mar 27 at 13:26





@Sfili_81 Great resource, thank you.

– HTMLFiver
Mar 27 at 13:26












2 Answers
2






active

oldest

votes


















2














Besides the fact that the 'dialog' functionality is not supported yet in many browsers ( except Chrome and some other Chromium based browsers), your HTML is not valid because as MDN states :




Permitted parents Any element that accepts flow content




Dialog MDN Docs



your dialog is nested inside a <span> element which is both flow and phrasing content element -> list of flow content elements but only accepts Phrasing content. ( Also p only accepts pharsing content ). So dialog being a flow content, and span only accepting pharsing content generates an invalid HTML structure.



Chrome and other Chromium based browsers are known to be more ' forgiving ' than Firefox and others. I suggest you change your HTML structure to be compliant with the official Docs. You can validate your HTML structure online. For starters a little indentation would be nice :)



In conclusion, the behavior in FF is the 'normal' one.



Your HTML structure should look like



<p>
Here's a paragraph
<span>
<label for="note" class="noteLabel">
<sup>Note</sup>
</label>

<input type="checkbox" id="note" class="note-toggle" style="">
</span>
</p>
<dialog class="note-content">
This is moved outside of the p in Firefox DOM and an extra p added below in DOM. Works fine in Chrome.
</dialog>





share|improve this answer



























  • <span> is listed under the flow content elements in the link you provide...

    – HTMLFiver
    Mar 27 at 12:01











  • @HTMLFiver Sorry my bad. I omitted to say that<span> is both flow and pharsing content. But accepts only pharsed content

    – Mihai T
    Mar 27 at 13:02












  • Thank you. Great info+

    – HTMLFiver
    Mar 27 at 13:21


















-1














<p> or <span> tags can only contain phrasing content but a dialog is flow content. This leads to an implied end of paragraph tag before the dialog. The behavior of the browser in this situation isn't spec defined as your HTML is invalid: they can only do their best to try fix your markup.



A venn diagram describing the relationship between types of content in HTML






share|improve this answer

























  • Great graphic, thank you.

    – HTMLFiver
    Mar 27 at 13:21













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2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









2














Besides the fact that the 'dialog' functionality is not supported yet in many browsers ( except Chrome and some other Chromium based browsers), your HTML is not valid because as MDN states :




Permitted parents Any element that accepts flow content




Dialog MDN Docs



your dialog is nested inside a <span> element which is both flow and phrasing content element -> list of flow content elements but only accepts Phrasing content. ( Also p only accepts pharsing content ). So dialog being a flow content, and span only accepting pharsing content generates an invalid HTML structure.



Chrome and other Chromium based browsers are known to be more ' forgiving ' than Firefox and others. I suggest you change your HTML structure to be compliant with the official Docs. You can validate your HTML structure online. For starters a little indentation would be nice :)



In conclusion, the behavior in FF is the 'normal' one.



Your HTML structure should look like



<p>
Here's a paragraph
<span>
<label for="note" class="noteLabel">
<sup>Note</sup>
</label>

<input type="checkbox" id="note" class="note-toggle" style="">
</span>
</p>
<dialog class="note-content">
This is moved outside of the p in Firefox DOM and an extra p added below in DOM. Works fine in Chrome.
</dialog>





share|improve this answer



























  • <span> is listed under the flow content elements in the link you provide...

    – HTMLFiver
    Mar 27 at 12:01











  • @HTMLFiver Sorry my bad. I omitted to say that<span> is both flow and pharsing content. But accepts only pharsed content

    – Mihai T
    Mar 27 at 13:02












  • Thank you. Great info+

    – HTMLFiver
    Mar 27 at 13:21















2














Besides the fact that the 'dialog' functionality is not supported yet in many browsers ( except Chrome and some other Chromium based browsers), your HTML is not valid because as MDN states :




Permitted parents Any element that accepts flow content




Dialog MDN Docs



your dialog is nested inside a <span> element which is both flow and phrasing content element -> list of flow content elements but only accepts Phrasing content. ( Also p only accepts pharsing content ). So dialog being a flow content, and span only accepting pharsing content generates an invalid HTML structure.



Chrome and other Chromium based browsers are known to be more ' forgiving ' than Firefox and others. I suggest you change your HTML structure to be compliant with the official Docs. You can validate your HTML structure online. For starters a little indentation would be nice :)



In conclusion, the behavior in FF is the 'normal' one.



Your HTML structure should look like



<p>
Here's a paragraph
<span>
<label for="note" class="noteLabel">
<sup>Note</sup>
</label>

<input type="checkbox" id="note" class="note-toggle" style="">
</span>
</p>
<dialog class="note-content">
This is moved outside of the p in Firefox DOM and an extra p added below in DOM. Works fine in Chrome.
</dialog>





share|improve this answer



























  • <span> is listed under the flow content elements in the link you provide...

    – HTMLFiver
    Mar 27 at 12:01











  • @HTMLFiver Sorry my bad. I omitted to say that<span> is both flow and pharsing content. But accepts only pharsed content

    – Mihai T
    Mar 27 at 13:02












  • Thank you. Great info+

    – HTMLFiver
    Mar 27 at 13:21













2












2








2







Besides the fact that the 'dialog' functionality is not supported yet in many browsers ( except Chrome and some other Chromium based browsers), your HTML is not valid because as MDN states :




Permitted parents Any element that accepts flow content




Dialog MDN Docs



your dialog is nested inside a <span> element which is both flow and phrasing content element -> list of flow content elements but only accepts Phrasing content. ( Also p only accepts pharsing content ). So dialog being a flow content, and span only accepting pharsing content generates an invalid HTML structure.



Chrome and other Chromium based browsers are known to be more ' forgiving ' than Firefox and others. I suggest you change your HTML structure to be compliant with the official Docs. You can validate your HTML structure online. For starters a little indentation would be nice :)



In conclusion, the behavior in FF is the 'normal' one.



Your HTML structure should look like



<p>
Here's a paragraph
<span>
<label for="note" class="noteLabel">
<sup>Note</sup>
</label>

<input type="checkbox" id="note" class="note-toggle" style="">
</span>
</p>
<dialog class="note-content">
This is moved outside of the p in Firefox DOM and an extra p added below in DOM. Works fine in Chrome.
</dialog>





share|improve this answer















Besides the fact that the 'dialog' functionality is not supported yet in many browsers ( except Chrome and some other Chromium based browsers), your HTML is not valid because as MDN states :




Permitted parents Any element that accepts flow content




Dialog MDN Docs



your dialog is nested inside a <span> element which is both flow and phrasing content element -> list of flow content elements but only accepts Phrasing content. ( Also p only accepts pharsing content ). So dialog being a flow content, and span only accepting pharsing content generates an invalid HTML structure.



Chrome and other Chromium based browsers are known to be more ' forgiving ' than Firefox and others. I suggest you change your HTML structure to be compliant with the official Docs. You can validate your HTML structure online. For starters a little indentation would be nice :)



In conclusion, the behavior in FF is the 'normal' one.



Your HTML structure should look like



<p>
Here's a paragraph
<span>
<label for="note" class="noteLabel">
<sup>Note</sup>
</label>

<input type="checkbox" id="note" class="note-toggle" style="">
</span>
</p>
<dialog class="note-content">
This is moved outside of the p in Firefox DOM and an extra p added below in DOM. Works fine in Chrome.
</dialog>






share|improve this answer














share|improve this answer



share|improve this answer








edited Mar 27 at 13:18

























answered Mar 27 at 11:36









Mihai TMihai T

12.2k1 gold badge10 silver badges24 bronze badges




12.2k1 gold badge10 silver badges24 bronze badges















  • <span> is listed under the flow content elements in the link you provide...

    – HTMLFiver
    Mar 27 at 12:01











  • @HTMLFiver Sorry my bad. I omitted to say that<span> is both flow and pharsing content. But accepts only pharsed content

    – Mihai T
    Mar 27 at 13:02












  • Thank you. Great info+

    – HTMLFiver
    Mar 27 at 13:21

















  • <span> is listed under the flow content elements in the link you provide...

    – HTMLFiver
    Mar 27 at 12:01











  • @HTMLFiver Sorry my bad. I omitted to say that<span> is both flow and pharsing content. But accepts only pharsed content

    – Mihai T
    Mar 27 at 13:02












  • Thank you. Great info+

    – HTMLFiver
    Mar 27 at 13:21
















<span> is listed under the flow content elements in the link you provide...

– HTMLFiver
Mar 27 at 12:01





<span> is listed under the flow content elements in the link you provide...

– HTMLFiver
Mar 27 at 12:01













@HTMLFiver Sorry my bad. I omitted to say that<span> is both flow and pharsing content. But accepts only pharsed content

– Mihai T
Mar 27 at 13:02






@HTMLFiver Sorry my bad. I omitted to say that<span> is both flow and pharsing content. But accepts only pharsed content

– Mihai T
Mar 27 at 13:02














Thank you. Great info+

– HTMLFiver
Mar 27 at 13:21





Thank you. Great info+

– HTMLFiver
Mar 27 at 13:21













-1














<p> or <span> tags can only contain phrasing content but a dialog is flow content. This leads to an implied end of paragraph tag before the dialog. The behavior of the browser in this situation isn't spec defined as your HTML is invalid: they can only do their best to try fix your markup.



A venn diagram describing the relationship between types of content in HTML






share|improve this answer

























  • Great graphic, thank you.

    – HTMLFiver
    Mar 27 at 13:21















-1














<p> or <span> tags can only contain phrasing content but a dialog is flow content. This leads to an implied end of paragraph tag before the dialog. The behavior of the browser in this situation isn't spec defined as your HTML is invalid: they can only do their best to try fix your markup.



A venn diagram describing the relationship between types of content in HTML






share|improve this answer

























  • Great graphic, thank you.

    – HTMLFiver
    Mar 27 at 13:21













-1












-1








-1







<p> or <span> tags can only contain phrasing content but a dialog is flow content. This leads to an implied end of paragraph tag before the dialog. The behavior of the browser in this situation isn't spec defined as your HTML is invalid: they can only do their best to try fix your markup.



A venn diagram describing the relationship between types of content in HTML






share|improve this answer













<p> or <span> tags can only contain phrasing content but a dialog is flow content. This leads to an implied end of paragraph tag before the dialog. The behavior of the browser in this situation isn't spec defined as your HTML is invalid: they can only do their best to try fix your markup.



A venn diagram describing the relationship between types of content in HTML







share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 27 at 11:35









James CoyleJames Coyle

6,2641 gold badge23 silver badges39 bronze badges




6,2641 gold badge23 silver badges39 bronze badges















  • Great graphic, thank you.

    – HTMLFiver
    Mar 27 at 13:21

















  • Great graphic, thank you.

    – HTMLFiver
    Mar 27 at 13:21
















Great graphic, thank you.

– HTMLFiver
Mar 27 at 13:21





Great graphic, thank you.

– HTMLFiver
Mar 27 at 13:21

















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