You can pass parameters to the function calls we have studied. In the following example, the inner function expects a string as a parameter and prints it to the console:
function func() {
return function(str) {
return str;
};
}
The second bracket corresponds to the internal function when called, which means that we pass the desired string to this second bracket:
function func() {
return function(str) {
return str;
};
}
console.log( func()('!') ); // shows '!'
Let's make both the first function take a parameter and the second one. And the result of the call will be the sum of these parameters:
function func(num1) {
return function(num2) {
return num1 + num2;
};
}
console.log( func(1)(2) ); // shows 3
Make the function func
, which,
when called like this: func(2)(3)(4)
,
will return the sum of the numbers passed
to the parameters.
Make the function func
, which, when
called like this: func(2)(3)(4)(5)()
,
will return an array of the numbers passed
in the parameters.