Objects
Arrays
For Loops
Iteration
Miscellaneous
100
Objects are a ________ data type
Complex
100
What is the first index of an array?
0
100
What is the proper order for these statements in a for loop: Stop, Update, Start?
Start, Stop, Update
100
Objects use a _______ loop to iterate
for-in
100
Which of the following are used to create Objects and which are used to create Arrays?:
() [] {} <>
{} for Objects
[] for Arrays
200
Identify the values in this object
"Ben", "Weston", "Instructor"
200
How would you access "hey" from this array?
array[1];
200
Correctly place these statements in the for loop: i++, var i = 0; i < 10
for() {}
var i = 0; i < 10; i++
200
What will be printed by this code?
name, hometown, occupation
200
What data type are keys of an Object?
Strings
300
How would you access "Weston" from this object?
person.hometown or person['hometown']
300
Arrays use _______ Notation to access individual elements.
Bracket
300
What values are printed to the console?
0 through 19, counting up by 1s
300
Complete the for-in loop
var key in obj
300
_____ are used to separate keys and values while _____ are used to separate properties.
colons, commas
400
Objects are a collection of ______ pairs called ______
Key:Value, Properties
400
How would you access the last element of any array?
var array = [...]
var lastElement = ???;
array[array.length - 1];
400
What are the values printed to the console?
50, 40, 30, 20, 10
400
Replace the ? to print out one value per loop from the object
obj[key]
400
What is the name of Operation Spark's Mascot?
Hallebot
500
Open jsbin.com and create an object called user that has 3 properties: firstName, lastName, and age. It should have 2 different data types.
500
var grades = [85, 67, 93, 79, 88, 72, 59, 95, 76];
I want to add 5 points to each of these grades. What is the best way to do this? How will you change each element of the array?
Use a for loop, iterate through each index of the array, grades[i] += 5;
500
Provide an example of an infinite loop / explain how an infinite loop can occur.
An infinite loop occurs when the stop condition can only ever be true.
500
Fill in the three blank spaces to print out each element of the array
0;
array.length;
array[i];
500
This is a javascript library that makes websites interactive using simple functions
jQuery