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Add example showing that uninitialized var doesn't override a same-name function#44537

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Josh-Cena merged 3 commits into
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Anusha-Pwr:add-var-function-redeclaration-example
Jul 12, 2026
Merged

Add example showing that uninitialized var doesn't override a same-name function#44537
Josh-Cena merged 3 commits into
mdn:mainfrom
Anusha-Pwr:add-var-function-redeclaration-example

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@Anusha-Pwr

@Anusha-Pwr Anusha-Pwr commented Jun 21, 2026

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Description

Adds a clarifying example to the var redeclarations section showing that a var declaration without an initializer does not overwrite the value of a same-name function declaration.

Motivation

The page already explains that duplicate var declarations without initializers do not overwrite an existing value, and that a var initializer overrides a same-name function declaration. This example directly shows the related case of a var declaration without an initializer alongside a same-name function declaration, making that behavior clearer for readers.

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@Anusha-Pwr
Anusha-Pwr requested a review from a team as a code owner June 21, 2026 18:59
@Anusha-Pwr
Anusha-Pwr requested review from sideshowbarker and removed request for a team June 21, 2026 18:59
@github-actions github-actions Bot added Content:JS JavaScript docs size/s [PR only] 6-50 LoC changed labels Jun 21, 2026
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github-actions Bot commented Jun 21, 2026 •
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Preview URLs (1 page)

Flaws (1)

Found an unexpected or unresolvable flaw? Please report it here.

URL: /en-US/docs/Web/JavaScript/Reference/Statements/var
Title: var
Flaw count: 1

  • macros:
    • Macro jsxref produces link /en-US/docs/Web/JavaScript/Reference/delete which is a redirect

(comment last updated: 2026-07-12 19:52:22)

@Anusha-Pwr

Anusha-Pwr commented Jul 8, 2026

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Hi! Just checking in on this PR when someone has time.
The checks had passed, and I also noticed that the preview reports one flaw for an existing {{jsxref("delete")}} link on this page. It seems unrelated to my change, but I’d be happy to update it in this PR too if maintainers prefer.

Thanks!

@Josh-Cena

Josh-Cena commented Jul 12, 2026

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Thanks, but I think, as you already pointed out, this fact can be reasonably deduced from the previous two points and does not need to be explained yet again. There are way too many pairwise interactions between these declarations and it's not worthwhile demonstrating every kind.

@Josh-Cena Josh-Cena closed this Jul 12, 2026
@Josh-Cena Josh-Cena reopened this Jul 12, 2026
@Josh-Cena

Josh-Cena commented Jul 12, 2026

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Actually on second thought, I think this is worth it.

Josh-Cena
Josh-Cena approved these changes Jul 12, 2026
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Nice addition, thank you!

@Josh-Cena
Josh-Cena merged commit ae58f6b into mdn:main Jul 12, 2026
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@Josh-Cena Josh-Cena Josh-Cena approved these changes
@sideshowbarker sideshowbarker Awaiting requested review from sideshowbarker sideshowbarker is a code owner automatically assigned from mdn/javascript

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