Are there constants in JavaScript?

Question

Is there a way to use constants in JavaScript?

If not, what\'s the common practice for specifying variables that are used as constants?

Answer 1

For a while, I specified "constants" (which still weren't actually constants) in object literals passed through to with() statements. I thought it was so clever. Here's an example:

with ({
    MY_CONST : 'some really important value'
}) {
    alert(MY_CONST);
}

In the past, I also have created a CONST namespace where I would put all of my constants. Again, with the overhead. Sheesh.

Now, I just do var MY_CONST = 'whatever'; to KISS.