Chapter 6 : JavaScript Functions & Input/ Output

Which of these are correct methods to create a function?

• function myFunction {

  // Some code }

• function myFunction[] {

  // Some code }

• function myFunction() {

  // Some code }

• function myFunction(x, y, z) {

  // Some code }

Given the following code, which is considered the parameters of the function

function myFunction(a, b, c) {

var x = a + b + c;

}

• x

• a

• b

• c

Given the following code, what is the final value of x?

var x = 0;

function myXFunction() {

x = x + 10;

}

x = x + 1;

• 11

• 0

• 10

• 1

What should go into the indicated location make the final value of x = 11?

var x = 0;

function myXFunction() {

x = x + 10;

}

WRITE CODE HERE

x = x + 1;

• function myXFunction()

• MYXFUNCTION()

• myXFunction()

• myxfunction()

What will the final value of x be?

var x = 0;

function myXFunction() {

return 10;

}

x = x + 1;

x = myXFunction();

• 11

• 0

• 10

• 1

Given the following function.

function myFunction () {

//Some Code }

Which of the code below will allow the following button to invoke myFunction?

<input type="button" id="mybutton" value="Click Me"/>

• var h = document.getElementById(“mybutton”); h.addEventListener(“click”, myFunction);

• var h = document.getElementById(“mybutton”);

  h.onclick(myFunction);

• document.getElementById(“mybutton”).addEventListener(“click”, myFunction);

• document.getElementById(“mybutton”).onclick(myFunction);

Fill in the blanks to allow the following button invoke the myFunction function when clicked

<button id="myButton" value="Click Me" ________ />

function myFunction() {

//Some Code }

Which of the following code will allow the button to invoke hisFunction?

<button id="myButton" value="Click Me" ________ />

function hisFunction(X, Y) {

//Some Code }

• onclick = "hisFunction()"

• onclick = "hisFunction"

• onclick = "hisFunction(1)"

• onclick = "hisFunction(1, 2)"

Which of this dialog boxes allows the user to verify or accept something?

• alert()

• confirm()

• prompt()

What code will result in the above?

• alert("Please enter your phone number:")

• confirm("Please enter your phone number:")

• prompt("Please enter your phone number:")