Welcome to the JavaScript Cookbook, a compilation of helpful articles that provide step-by-step instructions on how to perform common tasks in JavaScript. Whether you’re a beginner or an experienced developer, you’ll find practical solutions to enhance your JavaScript skills.
Note: This document is continuously updated with new content, ensuring that you have access to a wealth of valuable how-tos.
Strings
- How to Uppercase the First Letter of a String in JavaScript: Learn how to capitalize the first letter of a string using JavaScript.
- How to Check if a String Contains a Substring in JavaScript: Discover how to determine if a string contains a specific substring.
- How to Replace All Occurrences of a String in JavaScript: Find out how to replace every instance of a string within another string.
- How to Convert a String to a Number in JavaScript: Learn the techniques for converting a string to a numerical value.
- How to Create a Multiline String in JavaScript: Understand how to create strings that span multiple lines.
- How to Check if a String Starts with Another in JavaScript: Explore methods for determining if a string starts with a given substring.
Numbers
- How to Trim the Leading Zero in a Number in JavaScript: Learn how to remove the leading zero from a number in JavaScript.
- How to Format a Number as a Currency Value in JavaScript: Discover techniques for formatting numbers as currency values.
- How to Generate a Random Number Between Two Numbers in JavaScript: Learn how to create random numbers within a specified range.
Dates
- How to Get the Current Timestamp in JavaScript: Learn different ways to obtain the current timestamp in JavaScript.
Objects
- How to Remove a Property from a JavaScript Object: Discover methods for deleting properties from JavaScript objects.
- How to Inspect a JavaScript Object: Learn techniques for examining the properties of JavaScript objects.
- How to Deep Clone a JavaScript Object: Understand how to create a copy of a JavaScript object without referencing the original.
- How to Check if a JavaScript Object Property is Undefined: Learn how to determine if an object property is undefined.
- How to Merge Two Objects in JavaScript: Discover ways to combine two JavaScript objects into one.
- How to Access a Method of an Object Dynamically in JavaScript: Learn how to access object methods dynamically.
- How to Use the Destructuring Syntax to Work with Arrays and Objects in JavaScript: Understand the destructuring syntax and how to apply it to arrays and objects.
- How to Count the Number of Properties in a JavaScript Object: Discover methods for counting the number of properties in a JavaScript object.
- How to List All Methods of an Object in JavaScript: Learn how to obtain a list of all the methods of a JavaScript object.
Arrays
- How to Remove an Item from an Array in JavaScript: Understand various techniques for removing elements from JavaScript arrays.
- How to Append an Item to an Array in JavaScript: Discover methods for adding elements to the end of JavaScript arrays.
- How to Initialize a New Array with Values in JavaScript: Learn different approaches to create arrays with predefined values.
- How to Use Async and Await with Array.map(): Find out how to use async and await when mapping an array in JavaScript.
- How to Empty a JavaScript Array: Explore techniques for clearing all elements from a JavaScript array.
- How to Sort an Array of Objects by a Property Value in JavaScript: Learn how to sort an array of objects based on the value of a specific property.
- How to Get the Unique Properties of a Set of Objects in a JavaScript Array: Discover approaches to obtain the unique properties present in a collection of objects within a JavaScript array.
Functions
- How to Set Default Parameter Values in JavaScript: Learn techniques for defining default values for function parameters in JavaScript.
Loops
- How to Get the Index of an Iteration in a for-of Loop in JavaScript: Discover how to retrieve the index of an iteration within a for-of loop in JavaScript.