Javascript in Khan 1116

Front

Which keyword is commonly used to declare a variable in JavaScript? Options: const, let, int, float, var

Back

var

Front

What does initializing a variable mean?

Back

Assigning a value to it

Front

Which of the following is the correct way to declare and initialize a variable to store the number 10? Options: int number = 10;, number = 10;, var number = 10;, float number = 10;, number 10;

Back

var number = 10;

Front

What is the output of the following code? `var value = 53; value = 75; console.log(value);`

Back

75

Front

Which type of variable is used to hold true or false values?

Back

Boolean

Front

How are strings represented in JavaScript?

Back

like this "Alice"

Front

What type of value does the following variable hold? `var apple = "fruit";`

Back

String

Front

Which of the following is a good variable name? 5$age, 4_name, var, appleTree, 2apples

Back

appleTree

Front

What is the difference between declaring and initializing a variable?

Back

Declaring means giving it a name and initializing means assigning it a value.

Front

What symbol is most likely to appear in a JavaScript program? Options: ; (semicolon), = (equals), " (quote), , (comma)

Back

; (semicolon)