Boolean value in javascript

Question

Ok, I've got an issue I don't understand.

I have a boolean value which I test and if true I do something. BUT javascript never go in it even if the var is true.

I try this :

if(isConfigD)
    handleConfigurationD;

this :

if(isConfigD == true)
    handleConfigurationD;

And this :

if(isConfigD === true)
    handleConfigurationD;

But nothing work whereas isConfigD is always set on true :(

What am I missing ?

"BUT javascript never go in" --- how do you know that? When debugging, always check the facts, not derivatives from the facts. — zerkms, Sep 14 '16 at 07:34
Possible duplicate of [In JavaScript, does it make a difference if I call a function with parentheses?](http://stackoverflow.com/questions/3246928/in-javascript-does-it-make-a-difference-if-i-call-a-function-with-parentheses) — Thilo, Sep 14 '16 at 07:41
@Shadam so how could you use debugger and did not see that the function is not called? — zerkms, Sep 14 '16 at 07:51
@Shadam your question was why the check does not pass: "BUT javascript never go in". Do you seriously not see the difference between what you said and "why is function not called"? — zerkms, Sep 14 '16 at 08:02
@zerkms the fact was when the debugger stop on `if(isConfigD)` it doesn't go on the line where the `handleConfigurationD;` is. — Shadam, Sep 14 '16 at 08:16
@Shadam well, that's not true https://jsfiddle.net/kp15rwzr/ Not sure why you think that lying helps, but whatever. — zerkms, Sep 14 '16 at 08:19

Nina Scholz · Accepted Answer · 2016-09-14T07:35:27.070

6

You condition works well, but if you call a function, then you need parenthesis for the call.

handleConfigurationD();
//                  ^^

edited Sep 14 '16 at 07:35

answered Sep 14 '16 at 07:33

Nina Scholz

3

And worth noting that the first one is the correct way to check: `if (isConfigD)` – T.J. Crowder Sep 14 '16 at 07:34

score 1 · Answer 2 · answered Sep 14 '16 at 07:34

1

handleConfigurationD is just an identifier. That statement is going to have one of two outcomes:

Presumably you have stored a function in it and want to call the function.

handleConfigurationD();

answered Sep 14 '16 at 07:34

Quentin

2 Answers2