If you feel your code is slow, use the JavaScript profiler to measure performance and find weaknesses FireBug contains a powerful debugger for JavaScript, which allows you to stop the execution at any time, to understand and polish the script. Your pages take a long time to load, but why? Wrote a lot of scripts? Forgot to compress the images and they weigh a lot? FireBug will help you to understand and fix all these problems Allow FireBug to be your eyes, and it will measure and display all offsets, indents, boundaries, fillings, and all dimensions If CSS blocks do not become correct, it can be difficult to understand why it happens. C'' FireBug tables give you all the information about the styles in your web page, and if you're not satisfied with something, you can change it and view the effect instantly Once you've found what you've been looking for, FireBug gives you more information about the item and you can edit it live FireBug allows you to easily find HTML elements in the middle of large documents. FireBug provides multifunctional 'point' control over the site
You can open FireBug in a separate window or in the form of a panel at the bottom of your browser.
