Errors

Errors happen in code. We need to be able to handle them in our JavaScript code. We also may sometimes wish to throw our own errors in specific situations. Ideally we want to handle errors gracefully to provide the best end user experience we can. Suppose we have the following code…

let animal = newAnimal;
console.log(animal); 

This code will throw a reference error because newAnimal is not defined. This will bring our code to a halt, but is that really what we want to do? We can use tools like try/catch to handle errors more efficiently.

Happy Coding!

Clay Hess

More To Explore

Acronym DOM on wood planks
Code

A Friendly Introduction to the Document Object Model (DOM) API

The Document Object Model (DOM) is the browser’s in-memory representation of your HTML, letting JavaScript select elements (querySelector), listen to events (addEventListener), update content (textContent), toggle styles (classList), and create/insert nodes (createElement, insertAdjacentElement). With it, a button can change a box’s text, toggle a highlight class, set a data attribute, or insert a new paragraph right after the box—no page reload required—illustrating the simple flow: select, listen, update.

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