RMM | Javascript (20th March 2020)

What does Javascript do?

• Specify the layout of the webpages

• Define the function of the webpage

• Define the content of the workbook

• I don’t know :(

How would you define a variable called steps with a value of 20?

• var steps= 20;

• steps=20;

• Steps=20;

• variable steps=20;

If we have an array called “numbers” which contain [39,20,40,99,30], what syntax should you write to obtain the value 40?

• numbers[2]

• Numbers[1]

• numbers(2)

• numbers[3]

How do you obtain the length of an array called “cards” which contain [“hearts”,spades”,”clubs”,”diamonds”] ?

• cards.length

• Cards.length

• Cards,length

• cards.Length

If you have an array : "things" =[“pen”,”shorts”,”sofa”,”bed”,”table”].

How will you create a new array called "specialthings" containing only bed, table and sofa?

• specialthings(bed,table,sofa);

• specialthings.push(things[3],things[things.length-1],things[2]);

• things.push(things[3],things[things.length-1],things[2]);

• things.push(things[0],things[1],things[2])

This is a for loop that let variable i count from 0 to 200 in increments of 3.Rearrange the code in such a way that it works.

• 4,6,5,1,3,2,8,7

• 4,5,6,7,1,2,8,3

• 5,6,7,8,1,2,3,4

• 3,5,7,1,2,4,5,8

How many mistake are there in this code snippet?

• 1

• 2

• 3

• 4

What do these symbols mean (>, !=, || ) ?

• Lesser than, equal, and

• Greater than, not equal, or

• Lesser than or equal to, and, or

• Null, not equal, and