JavaScript Object.prototype.toString.call() Program to Check If a Variable is of Function Type at Run Time Full Project For Beginners

script.js

// program to check if a variable is of function type

function testVariable(variable) {
      
    if(Object.prototype.toString.call(variable) == '[object Function]') {
        console.log('The variable is of function type');
    }
    else {
        console.log('The variable is not of function type');
    }
}

const count = true;
const x = function() {
    console.log('hello')
};

testVariable(count);
testVariable(x);

// program to check if a variable is of function type

function testVariable(variable) {

if(Object.prototype.toString.call(variable) == '[object Function]') {

console.log('The variable is of function type');

}

else {

console.log('The variable is not of function type');

}

const count = true;

const x = function() {

console.log('hello')

};

testVariable(count);

testVariable(x);

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