JavaScript

Use forEach over for loop Prefer forEach over for loop for simple iterations: const numbers = [1, 2, 3, 4, 5]; numbers.forEach(number => console.log(number)); The forEach method is called on the numbers array. The first argument to forEach is a callback function, which is executed for each element in the array. The callback function takes … Read more

use of higher-order functions  Make use of higher-order functions like map, filter, and reduce to process arrays: const numbers = [1, 2, 3, 4, 5]; // Use map const double = numbers.map(number => number * 2); // Use filter const even = numbers.filter(number => number % 2 === 0); // Use reduce const sum = … Read more

strict mode example Use strict mode to enforce modern JavaScript syntax and catch errors early: ‘use strict’; “use strict” is a directive in JavaScript that enables “strict mode”. Strict mode is a way to opt in to a “secure” version of JavaScript. When in strict mode, JavaScript will validate your code more strictly and throw … Read more

Use const and let Always declare variables with const or let, rather than var: // Use let let name = ‘John Doe’; // Use const const PI = 3.14; var, let, and const are used to declare variables. var is the oldest way to declare variables in JavaScript and has function scope. This means that … Read more

Use Arrows functions Use arrow functions instead of function for cleaner and concise code: // Function expression const multiply = (a, b) => a * b; // Implicit return const square = x => x * x; Arrow functions, also known as “fat arrow” functions, are a shorthand way to declare anonymous functions in JavaScript. … Read more

strict mode example Use strict mode to enforce modern JavaScript syntax and catch errors early: ‘use strict’; “use strict” is a directive in JavaScript that enables “strict mode”. Strict mode is a way to opt in to a “secure” version of JavaScript. When in strict mode, JavaScript will validate your code more strictly and throw … Read more