Question

How to check if a variable is of function type in JavaScript

Answer 1

function isfunctiontype(variable) {
    return variable instanceof Function
}

const b = true;
console.log(isfunctiontype(b));

const a = function() {
    return 3
};
console.log(isfunctiontype(a));




/*
run:

false
true

*/

 

70+ SQL courses for beginners and professionals