In a nutshell map() is a built-in function of Array in JavaScript. It helps us iterate on an array, calls a provided callback() on each element, and returns a new array with the new results. Parameters map() accepts as parameters - current element — The current element being processed in the array. - the…

One of the problems I had to solve recently involved handling Timezone and Date/Time data types. Whoever ever worked with both Timezones and Date/Time data types knows it is much much (much) harder than it looks! For clarity, Let’s understand what is the difference between Timestamp and an Offset. A…

Array is one of the most commonly used data structure in the computer science world. If you ever had used a list of items such as todo list or playlist or a contacts list on your phone you most probably used an Array. An array is a data structure for…

Debounce function limits the rate at which a function can fire. We want to use debounce every time we trigger an event/make an API call/run a process that is a heavy task. For example, an autocomplete. When a user types on an input element we want to send a server…

Flatten a dimensional array is a perfect problem to use recursion. Recursion is great if you want to solve a big problem by solving smaller instances of that big problem. Array we want to flatten var arr = [1, [2, 3], [[4]]]; The output should be var arr = [1…

JavaScript runs code sequentially in top-down order. Sometimes (which actually happen a lot) we want to run code after function has finish executed or an event has happened means to run the code in an asynchronous way. Since JavaScript is synchronized language, we need to find a way to run…

A callback function is a function passed into another function as an argument, which is then invoked inside the outer function to complete some kind of routine or action Why do we use callbacks? JavaScript runtime engine is a single threaded and can only do one thing at a time, means, it is synchronized. However…

In JavaScript, this keyword behaves a bit differently than other languages like C++, Java, etc. …

Through out my career as a Software Engineer I have always had the need to deal with API endpoints either from the front or the back side of the product. …