How to make Google Chrome JavaScript console persistent?

When debugging with Google Chrome's JavaScript console, you often encounter issues where console logs are lost after a page refresh. To ensure the continuity and completeness of debugging information, you can use the following method to make console logs persistent:

Step 1: Open Developer Tools

First, open Chrome's Developer Tools. You can do this in several ways:

• Right-click on a page element and select "Inspect".
• Use the shortcut Ctrl+Shift+I (Windows/Linux) or Cmd+Option+I (Mac).
• Through the browser menu: click the three dots in the top-right → More Tools → Developer Tools.

Step 2: Navigate to the Console

In the Developer Tools interface, locate and click the "Console" tab to enter the JavaScript console interface.

Step 3: Enable Log Persistence

At the top of the console, you'll see a small settings icon (usually on the right). Click this icon to open the "Settings" panel. Within this panel, there's a section labeled "Console". In this section, check the "Preserve log" option.

Example

For instance, if you're debugging a login feature where the page refreshes after login, the console output typically disappears upon page refresh. After enabling "Preserve log", previous console outputs are retained even after a page refresh, which is very helpful for tracking and troubleshooting.

Step 4: Test and Verify

After enabling log persistence, you can refresh the page or navigate to other pages to test if the setting is effective. Ideally, all previous console logs should remain and not disappear due to page loading.

With this setting, error messages, warnings, and other log outputs will be persistently retained in the console until you manually clear them or close the Developer Tools. This is very useful for long-term debugging or when you need to track the complete path of an issue.