Javascript Programming Tutorials, Guides & Best Practices

  person.city = "New York";
  person.age = 26;
  console.log(person);

• Deleting Properties:

<button id="myButton">Click Me!</button>

<script>
  document.getElementById("myButton").addEventListener("click", function() {
    alert("Button clicked!");
  });
</script>

Congratulations! You've taken your first steps into the world of JavaScript. In this tutorial, we covered the basics, including variables, data types, operators, loops, functions, and events. With this foundation, you’re ready to start building more complex and interactive web pages.

function greet(greeting, punctuation) {
    console.log(greeting + ' ' + this.name + punctuation);
}

const person = { name: 'Alice' };

const greetPerson = greet.bind(person, 'Hello');
greetPerson('!');  // Output: "Hello Alice!"

In this example, greet.bind(person, 'Hello') returns a new function (greetPerson) with this bound to person and the first argument pre-set to 'Hello'. When greetPerson('!') is called, it outputs "Hello Alice!".

JavaScript utility libraries are essential tools that help developers perform common tasks more efficiently, reduce boilerplate code, and improve code readability. These libraries offer a wide range of utility functions for tasks such as array manipulation, object handling, data transformation, and more. This cheatsheet provides a quick reference to some of the most popular JavaScript utility libraries and their key features.

Lodash is one of the most popular JavaScript utility libraries, offering a wide range of functions for common programming tasks such as working with arrays, objects, and strings.