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Questions and Answers
Which syntax is commonly used to create an empty array?
Which syntax is commonly used to create an empty array?
- ()
- {}
- <>
- [] (correct)
Which data structure is used to store ordered collections?
Which data structure is used to store ordered collections?
- Array (correct)
- Number
- String
- Object
How are array elements numbered?
How are array elements numbered?
- Starting with a random number
- Starting with negative one
- Starting with one
- Starting with zero (correct)
What method can be used to add a new element to an array?
What method can be used to add a new element to an array?
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What is the length of an array?
What is the length of an array?
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Study Notes
Arrays
- The syntax
[]is commonly used to create an empty array.
Data Structures
- Arrays are a type of data structure used to store ordered collections.
Array Indexing
- Array elements are numbered, starting from 0.
Array Methods
- The
push()method can be used to add a new element to an array.
Array Properties
- The
lengthproperty is used to determine the number of elements in an array, which represents the length of the array.
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