Tag: javascript

function extractDigits(text) { var regex = /bd+b/g; var matches = text.match(regex); return matches ? matches : []; } // Usage var text = “Order numbers: 123, 456 and 789.”; var digits = extractDigits(text); console.log(digits); // Output: [“123”, “456”, “789”] Explanation /bd+b/g: The regex pattern to match standalone digits. b: Word boundary to ensure digits are… Continue reading Identify digits within a string

Javascript is a weird and funny language, yet so beautiful and powerful. Javascript developers are always striving to learn something new and even if we have used it for years, we keep discovering new features & tricks every other time. This article is an attempt to unfold and revisit such features and tricks that are… Continue reading Incredible JavaScript Features

What happens when we deal with – Data — Easy to traverse. Nested Data — Little difficult to traverse. More levels of Nesting in Data — Painful to traverse; More lines of code. Ahhh…. too much work ???😰 Hang in there. OPTIONAL CHAINING to your rescue !!! Optional Chaining operator has been introduced in JavaScript now and is… Continue reading Optional Chaining Operator(?.)

Callbacks A callback function is a function passed into another function as an argument, which is then invoked inside the outer function to complete its action. They’re so common in JavaScript that you probably have used callbacks yourself without knowing that they’re called callbacks. A very simple example of the callback is: const numbers =… Continue reading Callback Hell

In computing, memoization is an optimization technique used primarily to speed up computer programs by storing the results of expensive function calls and returning the cached result when the same inputs occur again. – sources: Wikipedia. In a simpler words, Memoization is nothing but caching or storing the results in a memory. Without Memoization Fibonacci is the best example to illustrate the memoization… Continue reading Memoization it is!