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  2. Apr 18, 2018 · This interactive tutorial shows you how to run JavaScript in the Chrome DevTools Console. See Get Started With Logging Messages to learn how to log messages to the Console. See Get Started With Debugging JavaScript to learn how to pause JavaScript code and step through it one line at a time.

  3. Jul 12, 2023 · You can enter any JavaScript expression, statement, or code snippet in the Console, and it runs immediately and interactively as you type. This is possible because the Console tool in DevTools is a REPL environment.

  4. Sep 21, 2024 · Use the Console to test and debug Javascript web applications. Overview. This page explains how the Chrome DevTools Console makes it easier to develop web pages. The Console has 2 main uses: viewing logged messages and running JavaScript. Open the Console. You can open the Console as a panel or as a tab in the Drawer.

    • The result of 5 + 1 is 51. It should be 6. DevTools provides a lot of different tools for different tasks, such as changing CSS, profiling page load performance, and monitoring network requests.
    • The Console panel.
    • The Sources panel. The Sources panel UI has 3 parts
    • The 3 parts of the Sources panel UI. The File Navigator pane. Every file that the page requests is listed here. The Code Editor pane. After selecting a file in the File Navigator pane, the contents of that file are displayed here.
  5. Dec 9, 2012 · Open DevTools, go to the Settings dialog, switch to the Experiments tab. Enable the "Snippets support" experiment, close and reopen DevTools. Go to the Sources panel. In the left-hand navigator sidebar, switch to the Snippets tab . Right-click in the [empty] tree in this tab, select the New context menu item.

  6. JS code is normally added using the HTML <script> element for executing in web browsers, but most modern browsers also provide a console as part of their developer tools where we can directly write and run JS, typically for testing and debugging purposes.

  7. Apr 5, 2021 · Google Chrome. Open the page bug.html. There’s an error in the JavaScript code on it. It’s hidden from a regular visitor’s eyes, so let’s open developer tools to see it. Press F12 or, if you’re on Mac, then Cmd + Opt + J. The developer tools will open on the Console tab by default. It looks somewhat like this: