How to generate a random number in JavaScript
Use Math.random() to generate random floating-point numbers between 0 and 1 in JavaScript for various applications.
How to round a number in JavaScript
Use Math.round() to round numbers to the nearest integer or combine with multiplication for decimal precision in JavaScript.
How to check if a string is a palindrome in JavaScript
Use string reversal and comparison to efficiently check if a string reads the same forwards and backwards in JavaScript.
How to decode a base64 string in JavaScript
Use atob() function to decode base64-encoded strings back to their original text format in JavaScript efficiently.
How to encode a string in base64 in JavaScript
Use btoa() function to encode strings into base64 format in JavaScript for data transmission and storage.
How to extract numbers from a string in JavaScript
Use match() with regular expressions to efficiently extract all numbers from a string in JavaScript.
How to count characters in a string in JavaScript
Use the length property to count the number of characters in a JavaScript string efficiently and accurately.
How to repeat a string multiple times in JavaScript
Use the repeat() method to duplicate a string a specified number of times in JavaScript with modern ES6 syntax.
How to check if a string is empty in JavaScript
Use length property or strict equality to efficiently check if a string is empty in JavaScript with reliable methods.
How to remove special characters from a string in JavaScript
Use replace() with regular expressions to efficiently remove special characters from strings in JavaScript.
How to convert a string to lowercase in JavaScript
Use the toLowerCase() method to convert all characters in a string to lowercase letters in JavaScript efficiently.
How to convert a string to uppercase in JavaScript
Use the toUpperCase() method to convert all characters in a string to uppercase letters in JavaScript efficiently.
How to check if a string ends with another string in JavaScript
Use the endsWith() method to efficiently check if a string concludes with a specific substring in JavaScript.
How to check if a string starts with another string in JavaScript
Use the startsWith() method to efficiently check if a string begins with a specific substring in JavaScript.
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.
