Common Code Errors

Syntax Error

Another error is a syntax error. This is when your code violates the standards of the language. For example, if we utilize a restricted keyword incorrectly…

let class = ‘Bongo’;

If we console log the variable “class” out, we will see the error…SyntaxError: Unexpected token class. This is because “class” is a restricted keyword in JavaScript. Here is a list of reserved keywords in JavaScript…

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#Keywords

Another syntax error is SyntaxError: Unexpected identifier. This usually happens when we have characters in our code that is used for coding purposes but is being misinterpreted by the code. For example, if we have the following string variable…

let animalFood = ‘Bongo’s banana’;

As you can see, we have a single quote that is in the middle of the text being used as an apostrophe. JavaScript sees this as a way to denote the beginning and end of the content. It throws the syntax error because there is content other than the semi-colon after it. This does not mean we cannot use apostrophe, we just have to escape it by using the backslash (\)…

let animalFood = ‘Bongo\’s banana’;

This tells JavaScript to treat the single quote as just text, not the end of the variable content.

Happy Coding!

Clay Hess

More To Explore

Digital interface displaying code aligned with golden ratio in a dark futuristic room with glowing screens at a tech hub
Code

Unleashing Creativity with the Canvas API

The Canvas API stands as one of the web’s most powerful tools for creating dynamic, interactive graphics. Unlike SVG, Canvas operates at the pixel level, making it ideal for games, data visualizations, and real-time graphics processing. With a simple HTML element and JavaScript, developers can create everything from basic shapes to complex animations that push the boundaries of what’s possible in the browser.

Share This Post

small_c_popup.png

Need help?

Let's have a chat...


Login

Jump Back In!

Here at Webolution Designs, we love to learn. This includes sharing things we have learned with you. 

Register

Begin Your Learning Journey Today!

Come back inside to continue your learning journey.