Question

the only thing i know how to javascript is using alert(). is there any other way to help debugging javascript ?

Answer 1

Using Firebug, and the web development tools on other browsers, you can use commands such as

console.log(myVar);

to watch for variables, instead of the more disruptive alert. With the consoles on most development tools, you can also run arbitrary pieces of Javascript from there without having to modify the actual code, which can help immensely with with debugging Javascript. Oh, and the break on error function helps too.

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When you open up Firebug you see something like this. Click on the console tab and enable it:

Enter your code after the >>>. Just for fun try something like $('body').css('-moz-transform', 'rotate(10deg)') 😀