JavaScript Strings

var len = "jump it!".length;

What is the value of len?

• 8

• 7

• 9

• 6

• This code does not compile.

var x = "quarantine".indexOf("a");

What is the value of x?

• 4

• 3

• 2

• This code does not compile.

• StringIndexOutOfBoundsException

var s = "whatever".substring(1,4);

What is the value of s?

• "hate"

• "hat"

• "whate"

• "what"

• StringIndexOutOfBoundsException

var p = "Go Paw Patrol!".indexOf("p");

What is the value of p? (Case matters)

• 0

• 4

• 3

• -1

• This code will not compile.

var s = "cool cat".substring(6,"cool cat".length);

What is the value of s?

• "cat"

• "at"

• "cool c"

• This code does not compile.

• StringIndexOutOfBoundsException

var s = "good job".substring(3, 9);

What is the value of s?

• "d job"

• "od job"

• "d jo"

• "od jo"

• StringIndexOutOfBoundsException

Which type of value is returned from the length function?

• decimal

• word

• integer

• true/false

Choose correct purpose of indexOf().

• returns the index (the position) of the last occurrence of a specified text in a string

• returns the character of the first occurrence of a specified character in a string

• returns the index (the position) of the first occurrence of a specified text in a string (excluding whitespace)

• returns the index (the position) of the first occurrence of a specified text in a string (including whitespace)

var x = "10";

var y = "20";

var z = x + y;

console.log(z);

Guess the output.

• 1020

• 10 20

• 30

• "10 20"

var str = "hello world".indexOf("w");

What is the value of str?

• 5

• 6

• 7

• -1

• This code will not compile.