How to trim whitespace from a string in JavaScript
Use the trim() method to remove leading and trailing whitespace from strings in JavaScript efficiently.
How to split a string by spaces in JavaScript
Use the split() method with space separator to convert a sentence into an array of words in JavaScript.
How to convert an array to a string in JavaScript
Use the join() method to convert an array into a string with custom separators in JavaScript efficiently.
How to convert a string to an array in JavaScript
Use the split() method to convert a string into an array of characters or words in JavaScript efficiently.
How to replace all occurrences in a string in JavaScript
Use replaceAll() method to efficiently replace every instance of a substring in JavaScript with modern ES2021 syntax.
How to check if a string contains a substring in JavaScript
Use the includes() method to efficiently check if a string contains a specific substring with modern ES6 syntax.
How to capitalize the first letter of a string in JavaScript
Use charAt(0).toUpperCase() plus slice(1) to capitalize the first character of a string in JavaScript efficiently.
How to reverse a string in JavaScript
Use split, reverse, and join methods to flip the character order of a string in JavaScript with simple chaining.
How to shuffle an array in JavaScript
Use the Fisher-Yates shuffle algorithm to randomly reorder array elements efficiently and uniformly in JavaScript.
How to get the last element of an array in JavaScript
Use array index notation with length-1 to access the last element of a JavaScript array reliably and efficiently.
How to get the first element of an array in JavaScript
Use array index notation [0] to access the first element of a JavaScript array with simple and direct syntax.
How to find the minimum value in an array in JavaScript
Use Math.min with spread operator to efficiently find the smallest number in a JavaScript array with modern syntax.
How to find the maximum value in an array in JavaScript
Use Math.max with spread operator to efficiently find the largest number in a JavaScript array with modern syntax.
How to flatten a nested array in JavaScript
Use the flat() method to convert nested arrays into a single-level array with modern ES2019 syntax in JavaScript.
How to reverse an array in JavaScript
Use the reverse() method to flip the order of elements in a JavaScript array from last to first position.
How to sort an array in JavaScript
Use the sort() method to arrange array elements in ascending or descending order with custom comparison functions.
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.
