The console.log() method in JavaScript logs messages or data to the console, facilitating debugging by displaying variable values, object properties, or program flow information....

The toString() method in JavaScript returns a number as a string. It allows converting numerical values to string representations, enabling operations like formatting output, displaying numbers in various formats, and facilitating string manipulation based on numeric values....

A Promise is an object that represents either the completion or failure of a user task. A promise in JavaScript can be in three states pending, fulfilled, or rejected....

The JavaScript fetch() method used for retrieving resources from a server. It returns a Promise, resolving to the Response object, which encapsulates the server’s response to the request. fetch() facilitates making both GET requests, typically employed for fetching data, and POST requests, utilized for posting data to servers....

The map() method in JavaScript creates a new array by applying a function to each element of the original array. It skips empty elements and does not alter the original array, making it ideal for transforming data....

The find() method in JavaScript returns the first element that satisfies a provided test function. It iterates through each array element, ignoring empty slots, and returns undefined if no match is found. The original array remains unchanged....

The date.toISOString() method is used to convert the given data object’s contents into a string in ISO format (ISO 8601) i.e, in the form of (YYYY-MM-DDTHH:mm:ss.sssZ or ±YYYYYY-MM-DDTHH:mm:ss.sssZ). The date object is created using the date() constructor....

The filter() method creates a new array filled with elements that pass a test provided by a function. It’s a powerful tool for selectively extracting data from arrays based on specified criteria. Notably, it ignores empty elements, enhancing its efficiency and reliability in data filtering operations....

The match() method checks if a string fits a pattern defined by a regular expression. It gives back an array with the matches it finds. If there’s no match, it returns null. YOu can often use this method to find specific patterns within strings....

The Number.isInteger() method in JavaScript is a useful checking whether a number is a whole number or not. When you use it, it gives you a simple answer: ‘true‘ if the number is a whole number and ‘false‘ if it’s not. This can be really useful when you’re working with numbers and need to make sure they’re exactly whole, without any fractions or decimals....

The addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target. This method allows multiple event handlers on an element, enabling dynamic and flexible interaction management within web applications....

The includes() method returns true if a string contains a specified string. Otherwise, it returns false. The includes() method is case-sensitive and can accept an optional start position parameter, simplifying substring searches within strings for various applications....