Reference types Array (Basics) in JS | Variables and Data Types | HackVenom
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============== In this vedios you will learn Reference types Array (Basics) in JS===============
📺 Reference types Array (Basics) in JS :-
➽ Array Declaration:
Creating an array using square brackets [].
Example: let fruits = ['apple', 'banana', 'orange'];
➽ Array Indexing:
Accessing elements by their position in the array.
Example: fruits[0] returns 'apple'.
➽ Array Length:
Retrieving the number of elements in an array using the length property.
Example: fruits.length returns 3.
➽ Array Methods:
Using built-in array methods like push(), pop(), shift(), unshift(), splice(), and concat() for modifying arrays.
➽ Adding Elements:
push(): Adding elements to the end of the array.
unshift(): Adding elements to the beginning of the array.
Example: fruits.push('grape') adds 'grape' to the end.
➽ Removing Elements:
pop(): Removing the last element from the array.
shift(): Removing the first element from the array.
Example: fruits.pop() removes 'orange' from the end.
➽ Accessing and Modifying Elements:
Access and change elements using their indexes.
Example: fruits[1] = 'kiwi' changes the second element to 'kiwi'.
➽ Array Iteration:
Using loops like for, for...of, and array methods like forEach() to iterate through array elements.
➽ Array Concatenation:
Combining arrays using the concat() method or the spread operator ....
Example: let moreFruits = fruits.concat(['grape', 'pear']);.
➽ Slicing Arrays:
Creating a new array from a portion of an existing array using slice().
Example: let citrus = fruits.slice(1, 3);.
➽ Splicing Arrays:
Adding, removing, or replacing elements in an array using the splice() method.
Example: fruits.splice(1, 1, 'kiwi', 'mango') replaces 'banana' with 'kiwi' and 'mango'.
➽ Searching in Arrays:
Using methods like indexOf(), lastIndexOf(), and find() to locate elements in an array.
Example: fruits.indexOf('orange') returns the index of 'orange'.
➽ Array Transformation:
Applying functional programming concepts like map(), filter(), and reduce() to modify or filter array elements.
➽ Multi-dimensional Arrays:
Creating arrays of arrays to represent tables or grids.
Accessing elements within multi-dimensional arrays.
➽ Array Destructuring:
Extracting array elements into variables for easier access.
Example: const [first, second, ...rest] = fruits;.
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JavaScript_reference_types_array, Array_data_type_in_JavaScript, Creating_arrays_in_JavaScript, Array_methods_in_JavaScript, Array_literal_in_JavaScript, Array_constructor_in_JavaScript, Array_prototypes_in_JavaScript, Array_instance_in_JavaScript, Accessing_array_elements_in_JavaScript, Modifying_arrays_in_JavaScript, Array_iteration_in_JavaScript, Multidimensional_arrays_in_JavaScript, JavaScript_array_examples