ScriptEd Jeopardy

Conditionals

100

What is the "not equal" operator? Hint: The "equal" operator is ===

!==

200

What will this print?

var x = 25;
if(x < 10) {
    console.log("first");
} else if (x > 10) {
    console.log("second");
} else if (x === 25) {
    console.log("third");
} else {
    console.log("fourth");
}

second

300

What value could you set x to so "fourth" will be printed?

What value could you set x to so "third" will be printed?

if(x < 10) {
    console.log("first");
} else if (x > 10) {
    console.log("second");
} else if (x > 25) {
    console.log("third");
} else {
    console.log("fourth");
}

Setting x to 10 will print "fourth". There isn't a way to get "third" to print.

400

What will this print?

   var x = 3;
   if(x === "3") {
      console.log("true");
   }else{
      console.log("false");
   }

false

500

With conditionals, we're checking if something is true or false. We've learned 3 JavaScript types so far in this class. What JavaScript type is represents true or false?

boolean

Loops

100

What does a while loop do?

Allows code to be executed repeatedly based on a given true/false condition. The while loop can be thought of as a repeating if statement.

200

What will this print?

    var num = 0;
    var i = 0;
    while(i < 4){
        num = num + i;
        i++;
    }
    alert(num);

6

300

Write a while loop that console.log() the numbers 1-9.

  var i = 1;
  while(i < 10) {
     console.log(i);
     i++;
  }

400

What will this print?

 var sum = 0;
 var i = 0;
 while(i < 5) { 
   sum = sum + i;
   i++;
 } 
 alert(sum);

10

500

Write an infinite while loop.

while(true) { }

JavaScript1

100

How do you declare a variable in JavaScript?

The length property. For example:

var variableName;

200

List all of the JavaScript math operators you've learned and their names.

Addition +
Subtraction -
Multiplication *
Division /
Modulus %

300

  var x = 11;
  x = x + 3;
  console.log(x);
  x = 2;

What will console.log(x) output?

14

400

  var x = 3;
  var y = 10;
  var xy = (x * y) /3;

What value does the variable xy hold?

10

500

  var s = "ScriptEd "; 
  var r = "Rocks!";
  var sr = s + r;

What is stored in variable sr?

"ScriptEd Rocks"

Functions

100

What are the values in between the parentheses called? Hint: The correct answer is not HERE.

function someFunction (HERE) {
    // code
}

arguments (or parameters)

200

Here I'm defining a new function. Write some code that calls it.

function callMe(value1, value2) {
    console.log("You passed in " + value1 + " and " + value2);
}

callMe(1, 2)

300

The teacher will open this jsbin:

http://jsbin.com/aLoBoGaP/1/edit?js,console

What will get printed when I hit Run?

Nothing will get printed

400

Define a function that takes no arguments and uses alert to print "hello".

function myFunc() {
   alert("hello");
}

500

Write a line of code inside this function definition so the correct value (10) gets stored in the answer variable.

function add(num1, num2) {
    var sum = num1 + num2;
    // Add a line of code here
}

var answer = add(7, 3);

return sum;

Miscellaneous

100

In a CSS selector, how could you target an element that has id="example"?

HERE {
   width: 40px;
}

#example

200

Give 2 ways to increment 1 to num on the next line after the comment.

   var num = Math.random();
   // Add 1 to num

num++

num = num + 1

num += 1

++num

300

Name the 3 different types we've learned so far.

• Strings
• Numbers
• Booleans

400

Give 2 ways to comment out code.

Hint: One way comments out a single line, while the other way can be used to comment out multiple lines.

// This comments out one line of code

/* And this comments out
   multiples lines
   of code
*/

500

What will this print?

var x = 1 + "2";
console.log(x);

12