How to filter an array in JavaScript
Use the filter() method to create a new array with elements that pass a test condition in JavaScript.
How to remove duplicates from an array in JavaScript
Use Set with spread syntax to efficiently remove duplicate values from a JavaScript array with modern ES6 syntax.
How to find the index of an element in an array in JavaScript
Use the indexOf() method to efficiently find the position of an element in a JavaScript array and get its index.
How to get the length of an array in JavaScript
Use the length property to get the number of elements in a JavaScript array with a simple and efficient approach.
How to empty an array in JavaScript
Set the length property to 0 to efficiently empty a JavaScript array while maintaining all existing references.
How to clone an array in JavaScript
Use the spread operator to create a shallow copy of a JavaScript array without mutating the original array.
How to merge two arrays in JavaScript
Use the spread operator to efficiently merge two JavaScript arrays into a single array with modern ES6 syntax.
How to check if an array contains a value in JavaScript
Use the includes() method to efficiently check if a JavaScript array contains a specific value with modern ES6 syntax.
How to remove a specific item from an array in JavaScript
Use splice() with indexOf() to efficiently remove a specific element from a JavaScript array by value or index.
How to remove the last item from an array in JavaScript
Use the pop() method to efficiently remove the last element from a JavaScript array and return the removed value.
How to remove the first item from an array in JavaScript
Use the shift() method to efficiently remove the first element from a JavaScript array and get the removed value back.
