Question 1.
What does this code print?

for (var i = 0; i < 4; i++) {
    console.log(i + 1);
}
  

Question 2.
What is the value of count after this code runs?

var count = 0;
for (var i = 2; i < 7; i += 2) {
    count += i;
}
  

Question 3.
What does this function call return?

function mystery(x) {
    return x * 2 + 3;
}
mystery(5);
  

Question 4.
What is printed by this loop?

var x = 1;
while (x < 5) {
    x = x + 2;
}
console.log(x);
  

Question 5.
What is the value of nums[2]?

var nums = [10, 20, 30, 40];
  

Question 6.
What does this code print?

var arr = [3, 6, 9];
for (var i = 0; i < arr.length; i++) {
    console.log(arr[i] * 2);
}
  

Question 7.
What is printed?

console.log("hi" + 5);
  

Question 8.
What is printed?

var x = 4;
while (x < 10) {
    x += 3;
}
console.log(x);
  

Question 9.
After this code runs, what is the value of total?

var list = [2, 4, 6, 8];
var total = 0;

for (var i = 1; i < list.length; i++) {
    total += list[i];
}
  

Question 10.
What does check(13) return?

function check(num) {
    if (num % 2 == 0) {
        return "even";
    }
    return "odd";
}
  

Question 11.
What is printed?

var word = "CODE";
console.log(word[1]);
  

Question 12.
Which loop correctly prints every element of list?

Question 13.
What does this print?

var msg = "Hello";
console.log(msg.length);
  

Question 14.
What is the final value of x?

var x = 1;
for (var i = 0; i < 3; i++) {
    x = x + i;
}
  

Question 15.
What is the value of result?

function mult(a, b) {
    return a * b;
}
var result = mult(2, mult(2, 2));
  

Question 16.
Which of the following adds an element to the end of an array in JavaScript?

Question 17.
What does this print?

var str = "abcde";
console.log(str[4]);
  

Question 18.
What does this loop count?

var str = "banana";
var count = 0;

for (var i = 0; i < str.length; i++) {
    if (str[i] == 'a') {
        count++;
    }
}
  

Question 19.
What does this print?

console.log(3 > 5 || 2 < 4);
  

Question 20.
What does this function call return?

function sumFirstTwo(arr) {
    return arr[0] + arr[1];
}
sumFirstTwo([4, 10, 6]);
  

Question 21.
What does this code print?

var total = 1;
for (var i = 1; i <= 3; i++) {
    total = total * i;
}
console.log(total);
  

Question 22.
What is printed?

var x = 10;
for (var i = 0; i < 2; i++) {
    x -= i;
}
console.log(x);
  

Question 23.
What is printed?

var nums = [5, 2, 7];
var biggest = nums[0];

for (var i = 1; i < nums.length; i++) {
    if (nums[i] > biggest) {
        biggest = nums[i];
    }
}
console.log(biggest);
  

Question 24.
What does this code print?

var word = "loop";
for (var i = 0; i < word.length; i += 2) {
    console.log(word[i]);
}
  

Question 25.
What is printed?

var a = 2;
var b = 5;
var c = a + b;
a = c - 1;
console.log(a, b, c);
  

Question 26.
Which change makes this code run correctly and display a greeting?

function greet(name) {
    console.log("Hello " + name);
}
greet();
  

Question 27.
What kind of error is this?

var arr = [1, 2, 3];
console.log(arr[3]);
  

Question 28.
Why does this loop never run?

for (var i = 5; i < 0; i++) {
    console.log(i);
}
  

Question 29.
What does this function return?

function countPos(arr) {
    var count = 0;
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] > 0) {
            count++;
        }
    }
    return count;
}
countPos([-1, 2, 3, 0]);
  

Question 30.
What is printed?

var str = "APCSP";
console.log(str[0] + str[3]);
  

Question 31.
What does this function call return?

function sumEven(arr) {
    var total = 0;
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] % 2 == 0) {
            total += arr[i];
        }
    }
    return total;
}
sumEven([1, 2, 3, 4, 5]);
  

Question 32.
In the array ["a", "b", "c", "d"], what does arr[arr.length - 1] represent?

Question 33.
What is printed?

var nums = [2, 4, 6];
nums.push(8);
console.log(nums.length);
  

Question 34.
What does this function call return?

function isBig(n) {
    return n >= 10;
}
isBig(9);
  

Question 35.
What does this function call return?

function contains(arr, target) {
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] == target) {
            return true;
        }
    }
    return false;
}
contains([3, 5, 7], 5);
  

Question 36.
How many times does this loop execute?

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

Question 37.
What does the variable count represent after this code runs?

var count = 0;
for (var i = 0; i < list.length; i++) {
    if (list[i] > 10) {
        count++;
    }
}
  

Question 38.
What is printed?

var s = "hello";
var result = "";

for (var i = 0; i < s.length; i++) {
    if (s[i] != 'l') {
        result += s[i];
    }
}
console.log(result);
  

Question 39.
What is printed?

var scores = [80, 90, 100];
var total = 0;
for (var i = 0; i < scores.length; i++) {
    total += scores[i];
}
console.log(total / scores.length);
  

Question 40.
What is printed?

var age = 16;
if (age < 13) {
    console.log("Child");
} else if (age < 18) {
    console.log("Teen");
} else {
    console.log("Adult");
}