Functions in Javascript

Questions

1. Consider the JavaScript code: Identify the value that will be displayed in alert box at line 5? function lfc(myname){ console.log(10+"lfc" +12); } res=lfc(10); console.log(res); //line 5

2. Consider the JavaScript code: Choose the correct code to be inserted at line 4 in order to invoke the function. thisfun=function lfc(x){ console.log(x*x); } // line 4

3. What will be the output of the below code? function password(pass) { for (i = 0; i < pass.length; i++) { } } function name(pname) { console.log("The value of i is "+i); for (i = 0; i < pname.length; i++) { } } password("54321"); name("John");

4. What will be the output of the below code? let chaval= (p)=>p+2; console.log(chaval(2));

5. what will be the output of the below code? num1=5; function cal() { num1=10; num2=5; num3=num2*num1; console.log(num3); } cal();

6. Functions are invoked as functions or as methods with an __________.

7. ........ functions need not allow invocations with zero arguments.

8. When you invoke the........ method on a function f and pass an object o, the method returns a new function.

9. Variable declared is example of ___________ Variable. function message() { var name = "Bench"; alert(name); }

10. What is the output for code A and B? Code A: var x = 10; y = --x + 1; alert(y); Code B: var x = 10; y = x-- + 1; alert(y);

11. A _________ is a group of reusable code which can be called anywhere in your program.

12. The most common way to define a function in JavaScript is by using the ____________ keyword.

13. Which statement required if you want to return a value from a function?

14. Does JavaScript allows us to write our own functions as well?

15. The Function() constructor expects ______ number of string arguments

Index of Questions