softare development

Error: Request header field Content-Type is not allowed by Access-Control-Allow-Headers

At times, you get errors like this when you are trying to connect your localhost application to a remote server.

What you can do is to allow access control checks. Add the following code to your request header

header('Access-Control-Allow-Origin: *');
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");
header('Access-Control-Allow-Methods: GET, POST, PUT');

There you go!

Tell me in the comments if it works for you.

Recent Posts

ReferenceError vs. TypeError: What’s the Difference?

When debugging JavaScript, you’ll often encounter ReferenceError and TypeError. While both indicate something went wrong,…

10 hours ago

document.querySelector() vs. getElementById(): Which is Faster?

When selecting DOM elements in JavaScript, two common methods are document.querySelector() and document.getElementById(). But which…

10 hours ago

npm vs. Yarn: Which Package Manager Should You Use in 2025?

When starting a JavaScript project, one of the first decisions you’ll face is: Should I…

3 days ago

Why Learn Software Development? (And Where to Start)

Software development is one of the most valuable skills you can learn. From building websites…

6 days ago

JavaScript Multidimensional Arrays

In JavaScript, arrays are used to store multiple values in a single variable. While JavaScript…

2 weeks ago

What is Containerization

Containerization is a lightweight form of virtualization that packages an application and its dependencies into…

2 weeks ago