Check if function returns true to execute another function

Question

I have written a form validation using JS which ends with return(true);

function check() {
  ....validation code
  return(true);
}

All I want is, need to check if check() function returns true, I want to execute another function.

Code I have tried is as follows:

if(check() === true) {
  function() {
    //Another function code
  }
}

Answer 1

You should use return true; and your if statement doesn't need the === true comparison.

function check() {
  //validation code
  return true;
}

if(check()) {
  //Another function code
 }

JSFIDDLE

Answer 2

First of all, return is not a function, you can just do this:

return true;

Now, to only execute myFunction if check returns true, you can do this:

check() && myFunction()

This is shorthand for:

if(check()){
    myFunction();
}

You don't need to compare the return value of check with true. It's already an boolean.

Now, instead of myFunction(), you can have any JavaScript code in that if statement. If you actually want to use, for example, myFunction, you have to make sure you've defined it somewhere, first:

function myFunction() {
    // Do stuff...
}