Fix some const -> let, and some let -> const

[rubiesonthesky]

Summary

There were some vars that were changed to "const" when they should have been "let". Fixed few "lets" with "const" where applicable. (Used @lionralfs 's eslint setup to spot them)

Motivation

Supporting details

Related issues

Metadata

• Adds a new document
• Rewrites (or significantly expands) a document
• Fixes a typo, bug, or other error

[github-actions]

Preview URLs

• https://pr18734.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/WebGL_API/By_example/Hello_GLSL
• https://pr18734.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/WebGL_API/By_example/Hello_vertex_attributes
• https://pr18734.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/WebGL_API/By_example/Scissor_animation
• https://pr18734.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/WebGL_API/By_example/Textures_from_code
• https://pr18734.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/WebXR_Device_API/Startup_and_shutdown

Flaws

None! 🎉

External URLs

URL: /en-US/docs/Web/API/WebGL_API/By_example/Scissor_animation
Title: Scissor animation
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/WebGL_API/By_example/Hello_vertex_attributes
Title: Hello vertex attributes
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/WebGL_API/By_example/Hello_GLSL
Title: Hello GLSL
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/WebGL_API/By_example/Textures_from_code
Title: Textures from code
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/WebXR_Device_API/Startup_and_shutdown
Title: Starting up and shutting down a WebXR session
on GitHub

No new external URLs

(this comment was updated 2022-07-25 08:13:41.502123)

[lionralfs]

Glad that my setup could help someone else :)

I'm assuming you're using prefer-const to spot these? I'm seeing a total of 1916 prefer-const problems in Web/API.

[rubiesonthesky]

Glad that my setup could help someone else :)

I'm assuming you're using prefer-const to spot these? I'm seeing a total of 1916 prefer-const problems in Web/API.

Well, actually I turned that one off since I there is some other task about it and they should all be fixed manually. I used recommended settings but prefer-constand no-var off. :)

  extends: [
    "eslint:recommended"
  ],

[lionralfs]

Oh I see. It took me a few minutes to realize why these weren't showing up for me, turns out these are errors in files that I've added to my .eslintignore due to non-trivial syntax errors.

[teoli2003]

👍

[OnkarRuikar]

Now all the unwanted vars in the mdn/content have been removed (#16614, #16662).
It would be great if we run this again one more time.

[teoli2003]

(We still have one PR incoming for the Learn/ section)