JavaScript Date Objects

JavaScript Debugging

Debugging is an essential skill for any developer. It involves identifying and fixing errors in your code to ensure it runs as expected.

Code Debugging

Syntax or logical errors can occur in programming code.Diagnosing many of these errors is challenging.Errors in programming code frequently result in nothing happening. You won’t receive any error warnings or guidance on where to look for errors. Debugging begins with understanding what went wrong. JavaScript provides several tools and methods to make debugging easier.

JavaScript Debuggers

A JavaScript debugger helps you:

Pause code execution.
Inspect variables.
Step through code to locate errors.

A JavaScript debugger is integrated into every modern browser.You can use third-party software or built-in browser debugging tools.

Typically, you use the F12 key to enable debugging in your browser and choose “Console” from the debugger menu.

The console.log() Method

Using console.log() is one of the simplest ways to debug JavaScript. It helps you print variable values to the browser console.

let x = 10; console.log(“Value of x:”, x);

Setting Breakpoints

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Breakpoints allow you to pause code execution at specific lines, making it easier to inspect and debug.

Steps to set breakpoints:

Open the browser developer tools (F12).

Go to the “Sources” tab.

. Click the line number to pause execution.

The debugger Keyword

The debugger keyword stops code execution when the browser’s developer tools are open.

Major Browsers’ Debugging Tools

Chrome

1. Press Ctrl+Shift+I or F12. 2. Go to the “Sources” tab. 3. Set breakpoints and inspect variables.

Firefox

1. Press Ctrl+Shift+I or F12. 2. Navigate to the “Debugger” tab. 3. Use tools to pause and inspect.

Edge

1. Open developer tools with F12. 2. Use the “Debugger” tab to set breakpoints.

Opera

1. Open developer tools with Ctrl+Shift+I. 2. Use the “Sources” tab for debugging.

Safari

1. Enable the “Develop” menu in Safari settings. 2. Use Command+Option+I to open developer tools. 3. Debug in the “Sources” tab

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JavaScript Date Objects