Values of most of the variables will be displayed on the Watch Window.As an alternative action, you can press the combination of keys- Ctrl+R. Have a careful look at the values that are being displayed on the Watch Window.To resume the execution of script and stop at the next breakpoint, click Step Out. As an alternative action, you can press F11 button. To step into the body of a particular function, click Step Into. As an alternative action, you can press F10 button. To step over a particular function call, click Step Over. As an alternative action, you can press F8 button. To resume the execution of script once a breakpoint has been encountered, click Continue. Apart from Step Over button, you can see three other buttons- Continue, Step Into and Step Out. This button is present on the Firebug toolbar.
#How to install firebug in firefox code#
Execute the code line by line by using clicking “Step Over” button.On the right panel of the script tab, you can view the line of code to which the static breakpoint has been assigned. Set a static breakpoint on the desired line of code.With no second thought, launch the console of Firebug debugger. Write your JavaScript code in a notepad file.Here, are a simple 8 step procedure that lets you to debug JavaScript code in Firefox by using FireBug: How to Debug Javascript Code using FireBug In the search box, type Firebug and press the Enter key of the keyboard.įirebug is now added to your Firefox browser.At the top right hand corner of the window, you can find Open Menu On the contrary, Watch Window of Microsoft Visual Studio will display the values of selected variables. Woe-betide! Values of variables that are within the scope are only displayed. Watch Window of Firebug will display all the values of available variables as a list. However, comprehending the finer lines of difference that exist between the Watch Window of Firebug and that of Microsoft Visual Studio will do a world of good. Watch Window − ‘Watch Window’ is a familiar word to all who are well versed with the nitty-gritty of Microsoft Visual Studio.You can remove the unnecessary breakpoints. List of breakpoints − All the breakpoints will be displayed in the panel.In addition, they can be set by using two popularly used functions- debug and undebug. There is something endearing to dynamic breakpoints- They can be set from commandline. To set breakpoints based on function names, you can bank on dynamic breakpoints. As the name suggests, conditional breakpoints should be set based on a condition. To set static breakpoints, click the desired line of code in the Script panel. It can be said in all fairness that there are three kinds of breakpoints in Firebug- Static, Conditional and Dynamic. Breakpoint − JavaScript execution will stop at breakpoints.JSFileSelector − JSFileSelector displays the list of all JavaScript files that come under the purview of your page.The panel on the right encompasses two sub-panels- Watch and Breakpoint. The script panel is divided into two sub-panels-the panel of the left is JavaScript editor. HTML and CSS are the second and third tabs present on the pane. Script tab − Console is the first tab present on the pane of Firebug debugger.To all intents and purposes, JSEditor allows you to debug JavaScript code by using “Break on All Errors.” What all a user has to do is to check this option to pause script execution. JSEditor − JSEditor is nothing but JavaScript Editor.Here are a few insightful sentences on the components of Firebug debugger: Let me now introduce you to the technical jargon. Fortunately, debugging the lines of code written in JavaScript by using Firebug, the web browser-based debugger, is easy. However, JavaScript is not armed with excellent debugging functionalities. It is a great way to keep errors and exceptions at bay. To make their code bug-free, programmers rely on numerous debugging techniques. To develop dynamic web-based applications, JavaScript, the scripting language of the web should be used. To design static web pages, HTML is widely used. If there is any lack of correspondence between the actual results and expected results, root cause analysis is done and additional tests such as regression tests are performed so as to ensure that the results are along the expected lines. Whenever test cases are executed, the actual results are compared with expected results. It all starts with execution of test cases. Debugging is the systematic method of removing defects.
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