CODEWITHSUNDEEP
javascriptcssclassnumbers
Hakan
Hakan

Reputation: 169

ID and class with numbers - Good or bad?

If we speak micro optimization of javascript and CSS. Does it matter if the class or ID contains numbers? Just a silly thought, since I don't know how it works behind the scenes.

Will forexample:

#d1
#d2
#d3

and

.d1
.d2
.d3

Be better/worse than:

#da
#db
#dc

and

.da
.db
.dc

I know that you can't start a class or ID with a number...

Upvotes: 1

Views: 615

Answers (4)

Adeel
Adeel

Reputation: 19228

Use reasonable names so that programmers can maintain that. For Example if you are displaying a generic error message you can use class error-message which the programmers understand.

You can save bandwidth by using Http Compression. Also javascript compressor replace the variables names into a small variables with length of 1-3. You can also configure web server to compress static content (js, css), in addition to minimization done by compressor.

Upvotes: 1

ide
ide

Reputation: 20788

It doesn't matter at all. They're all treated as strings of characters. As an example, look at the WebKit source code.

inline const AtomicString& Element::getIdAttribute() const
{
    return fastGetAttribute(document()->idAttributeName());
}

Upvotes: 2

Chris Cherry
Chris Cherry

Reputation: 28554

I use numbers in ids all the time to specifically address items of a ul list for instance. There is no problem with that at all.

<ul>
<li id="user_1">User: Chris</li>
<li id="user_2">User: Steve</li>
<li id="user_3">User: Frank</li>
</ul>

Upvotes: 0

derekcohen
derekcohen

Reputation: 1514

you just can't start the ID with a number I think

Upvotes: 0

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