Coding⏱️ 2 min read📅 2026-05-31

How to Fix: Bootstrap dropdown not working

Check the data-toggle attribute in the dropdown-toggle element. Ensure it is set to 'dropdown' and that the href attribute is not set.

Quick Answer: Verify the data-toggle attribute is set to 'dropdown'. Also, ensure the href attribute in the dropdown-toggle element is empty or set to a valid URL.

To fix the Bootstrap dropdown not working issue, first ensure that you have included the Bootstrap CSS file in your HTML document. You can do this by adding the following line of code inside the section of your HTML.

Why You Are Getting This Error

  • [Cause]

Best Solutions to Fix It

Method 1: Ensure Proper CSS File Inclusion

  1. Step 1: Add the following line of code inside the section of your HTML.