Say I have the following construct appearing frequently in my code,
if (e.which==13){ ... }
...and I would like to make the code look a bit cleaner by writing instead:
ifEnterPressed{ ... }
Is there a way of defining an operator such as ifEnterPressed in Javascript?
I have figured out that the basic issue is that Javascript does not support syntactic macros.
No you can't define a custom operator like that.
You can of course write a helper method though:
function enterPressed(e) {
return e.which==13;
}
And then:
if(enterPressed(e)) {
// yay!
}
No, you can't do that in Javascript, but you can use a function:
function isEnter (e) {
return e.which === 13;
}
Then
if (isEnter(e)) {
// do something!
}
Beside the solution with a function, you can use an object for grouping and keeping the keycodes, like
KEY = {
enter: 13
}
Usage:
if (e.which === KEY.enter){ ... }
