New pages: htmloptionscollection #35982
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Content:WebAPI
Preview URLs (6 pages)(comment last updated: 2024-09-28 05:34:01) |
Josh-Cena
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Sep 21, 2024
Josh-Cena
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Sep 23, 2024
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| By default, the `add()` appends the {{HTMLelement("option")}} or {{HTMLelement("optgroup")}} passed as the parameter to the end of the collection. You can define where the added `<option>` or `<optgroup>` should be placed by specifying the `before` parameter. The `before` is the `<option>` element or a numeric `0`-based index of the `<option>` element the added element should precede. | ||
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| If the `before` parameter is null or out of range (or omitted), the `<option>` or `<optgroup>` will be appended as the last element in the collection, outside of any {{HTMLelement("optgroup")}}. If the `<option>` referenced by the `before` parameter is in an {{HTMLelement("optgroup")}}, an added `HTMLOptionElement` will be in the same group. | ||
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| The `<optgroup>` element can only contain `<option>` elements as child nodes. The `add()` method will successfully add an `HTMLOptGroupElement` to the end of the `HTMLOptionsCollection` or between `<optgroup>` elements only. In other words, attempting to add an `HTMLOptGroupElement` before an `<option>` within an `<optgroup>` may silently if the `<option>` referenced by the `before` parameter is not the first `<option>` within its `<optgroup>`. |
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Put these three paragraphs in a separate "description" section, I recommend
files/en-us/web/api/htmloptionscollection/selectedindex/index.md
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Co-authored-by: Joshua Chen <[email protected]>
Josh-Cena
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* New pages: htmloptionscollection * remove refect word * Apply suggestions from code review Co-authored-by: Joshua Chen <[email protected]> * edits per review * Update index.md * Update files/en-us/web/api/htmloptionscollection/selectedindex/index.md --------- Co-authored-by: Joshua Chen <[email protected]>
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part of #35544