One Pager Cheat Sheet

• We will learn about arrays, their implementation, and array operations in JavaScript in this lesson.
• Arrays are a data structure containing array elements with a specific index and length that allow for easier organization and storage of a collection of data in programming.
• Arrays in JavaScript allow multiple elements of different data types, such as strings, numbers, and other arrays, to be stored in a single array, initialized by giving it a name and specifying all elements separated by a comma.
• Arrays in JavaScript can store different data types, including strings, numbers, and other arrays, as long as the syntax is correct.
• Array operations such as adding, removing, searching, and printing can help make programming with arrays much easier.
• We can add and remove elements from a JavaScript array using the .push(), .pop(), and .splice() methods, and access the array length using the length property.
• The code will add 3 elements to an empty array cars using .push() and then remove one element from the 3rd index with .splice(), leaving the resultant array as ["Ford", "BMW"].
• The output of the code will be 7, the third element in the numbers array accessed by its index.
• We learned to manipulate and access array properties with various array operations that can be used in programming tasks.