Are Assumed Variables Safe to Use?

Question

I've always noticed that Chrome assumes variables based upon elements within an HTML document that have an ID.

For example, if I had <video id="video" src="foo.webm"></video> on my page, the variable "video" would be created automatically by the browser. No need to type out var video = document.getElementById("video");

Is this a standard browser feature? Is it something that is here with us to stay? Should I take advantage of this or be wary of it? I like it because it saves precious bytes, especially when you have a ton of element objects to define.

I never noticed this until now. – JosiahDaniels Oct 21 '15 at 19:11 — JosiahDaniels, Oct 21 '15 at 19:11

score -1 · Answer 1 · answered Oct 21 '15 at 19:11

-1

Variables are not created that way.

document.getElementById("video") means you are selecting the "video" element, not variable. Checkout CSS Selectors

answered Oct 21 '15 at 19:11

fos.alex

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You seem to have misunderstood the question. – Quentin Oct 21 '15 at 19:11

Are Assumed Variables Safe to Use?

1 Answers1