How to use useState in React
Use useState hook in React to manage component state with functional components for dynamic data and user interactions.
How to use v-model in Vue
Use v-model directive in Vue for two-way data binding between form inputs and component data properties for reactive forms.
How to compare two dates in JavaScript
Compare two dates in JavaScript using comparison operators on Date objects for sorting, validation, and date range checking.
How to get the current date in JavaScript
Get the current date in JavaScript using new Date() constructor for timestamps, date formatting, and time calculations in web applications.
How to get the day of the week in JavaScript
Get the day of the week in JavaScript using getDay() method to return weekday numbers or toLocaleDateString() for day names.
How to get the month name in JavaScript
Get month names in JavaScript using toLocaleDateString() with weekday option for localized month names in any language.
How to subtract days from a date in JavaScript
Subtract days from a date in JavaScript using setDate() method for date calculations, scheduling, and date range operations.
How to add days to date in JavaScript
Add days to dates using setDate() method - automatically handles month/year boundaries and leap years in JavaScript.
How to check if date is today in JavaScript
Check if a date is today using toDateString() comparison - ignores time components and handles timezone consistently.
How to format date as YYYY-MM-DD in JavaScript
Format dates as YYYY-MM-DD using toISOString().split("T")[0] - the most reliable method for ISO date format in JavaScript.
How to get current timestamp in JavaScript
Use Date.now() to get the current timestamp in JavaScript - the fastest and most reliable method for milliseconds since Unix epoch.
How to get yesterday's date in JavaScript
Get yesterday's date using setDate(getDate() - 1) - handles month/year boundaries automatically in JavaScript.
How to find the least common multiple in JavaScript
Calculate LCM using the formula (a * b) / GCD(a, b) with Euclidean algorithm for efficient mathematical computations in JavaScript.
How to find the greatest common divisor in JavaScript
Use Euclidean algorithm with recursive or iterative approach to find GCD efficiently for mathematical computations in JavaScript.
How to find the average of an array of numbers in JavaScript
Calculate array average by dividing the sum by length using reduce() and array length for statistical computations in JavaScript.
How to sum an array of numbers in JavaScript
Use reduce() method to sum array elements efficiently, or loop through values for calculating totals in JavaScript.
How to check if a number is prime in JavaScript
Check if a number is prime by testing divisibility up to its square root for efficient prime number validation in JavaScript.
