How Cookie Consent Works

Under regulations like GDPR (Europe) and CCPA (California), you often need to inform users that you are tracking them. A cookie banner is the standard way to do this.

1. The HTML/CSS Layout

The code generates a simple <div> that acts as the banner. We position it fixed at the bottom of the screen with a high z-index to ensure it stays on top of other content.

2. JavaScript & LocalStorage

We don’t want to annoy the user by showing the banner every time they refresh the page. To solve this, we use the browser’s LocalStorage API.

• Check: When the page loads, JS checks localStorage.getItem("cookieConsent").
• Show: If that item is null (meaning the user hasn’t clicked yet), we display the banner.
• Set: When the user clicks “Accept”, we save localStorage.setItem("cookieConsent", "true") and hide the banner.

This is much lighter and faster than setting an actual server-side cookie just to remember the UI state.

GDPR Compliance Note

This generator creates a “Notice” banner. For strict GDPR compliance, you must block tracking scripts (like Google Analytics) before the user clicks Accept. You would wrap your analytics code in a function (e.g., loadAnalytics()) and only call that function inside the “Accept” button’s click event listener.