False and True vs 1 and 0 - which should I use?!?

Which should I be using ?


eg:


var value = true


if (value = true) {


}


or :


var value = 1


if (value = 1) {


}





Does it make any difference regarding to the way or the speed at which the script is executed? What do professionals/yourself use?





Thanks for your help, Colin


ps The language which I'm refering to in particular is javascript.


False and True vs 1 and 0 - which should I use?!?
Donald Knuth, a god of programming, said good code should be self-documenting. Of course there are always comments but he meant more than that. It doesn't matter what language you are using. If you happen to walk away from your code for a few months or years, then when you come back true and false will mean a lot more to you than 1 and 0. Therefore I strongly suggest you go with true and false.False and True vs 1 and 0 - which should I use?!?
if a language has true/false boolean values, use those to mean true or false!





and beware of the difference between = and ==, = assigns, == is a equality test, so the if is





if (value == true) {





}





and of course it is also self-explaining and common practice





if ( value ) {





}
You should be using:


var value = true


if (value == true) {


}





even though this also works


var value = true


if (value) // this automatically checks if the value is true or false


{





}
It really makes no difference.





I prefer setting value=true





Then, you don't need if (value=true). That's redundant. You only need to say if (value).
Of course professionals use boolean values.





For Javascript :


var x = new Boolean(expression);





Possible values : true or false (0, Null, N/A, ...)

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