javascript

Question 1

what does strict mode do

Answer 1

promotes error detection

Question 2

var

Answer 2

creates global variables

Question 3

let

Answer 3

creates local variables

Question 4

const

Answer 4

creates local immutable variables

Question 5

immutable

Answer 5

cannot be changed once created

Question 6

===

Answer 6

strict equality

Question 7

what is the difference between strict comparison and regular comparison

Answer 7

strict will compare the values as well as the types

Question 8

asynchronous programming

Answer 8

starts executing code then moves onto the next thing

Question 9

synchronous programming

Answer 9

waits till the first set of code is executed before executing the next

Question 10

callback

Answer 10

asynchronous programming; a function passed to another that will be executed sometime later
ensures that the program doesnt wait until another task has been completed

Question 11

what does a lambda function look like

Answer 11

(parameters) => {implementation};

Question 12

what is the symbol for a lambda function

Answer 12

=>

Question 13

de-structuring

Answer 13

expanding an array or object to variables

Question 14

what does it look like to de-structure an array

Answer 14

const variables = [ 1, 2, 3, 4 ];
[a,b, …rest] = variables;
a=1, b=2, rest = [3,4]