In the debugger window, you can set breakpoints in the JavaScript code. At each breakpoint, JavaScript will stop executing, and let you examine JavaScript values. After examining values, …

May 5, 2014 · Here is a jsFiddle with a debug version of jQuery (i.e., not minified). When you look at the code on the first (non-minified) breakpoint, you can see that the code is handling many …

Aug 25, 2023 · The debugger statement invokes any available debugging functionality, such as setting a breakpoint. If no debugging functionality is available, this statement has no effect.

Debug toolbar: has buttons for the most common debugging actions. Debug console : enables viewing and interacting with the output of your code running in the debugger. Debug sidebar : …

Feb 4, 2025 · Modern browsers provide built-in JavaScript debuggers, accessible via Developer Tools. Debuggers can be turned on and off, forcing errors to be reported. They allow setting …

May 22, 2024 · This tutorial teaches you the basic workflow for debugging any JavaScript issue in DevTools. Read on, or watch the video version of this tutorial. Reproduce the bug. Finding a …

Jun 26, 2022 · Debugging is the process of finding and fixing errors within a script. All modern browsers and most other environments support debugging tools – a special UI in developer …

Nov 28, 2024 · Step Through Your Code: Use the step-over, step-into, and continue buttons to navigate through your code, observing how changes affect execution flow and variable states.

These are what you'd use to step through JavaScript. Right Click on an item which is changing 'visually' when the action you want to debug takes place, and click 'Inspect Element'. In this …

For more information about the debugger buttons for stepping through code, see Step over line of code in "JavaScript debugging features". See also JavaScript debugging features - Using the …