I have been working with Javascript and AJAX quite a bit recently. I always used alert() to debug something. At least to know that the script was able to call the method or something.

saveBtn = dojo.widget.createWidget(“Button”, {caption: “Save Settings”}, dojo.byId(“saveBtn”));
alert(saveBtn.caption);

This is annoying & traditional way. I’m lazy to use Venkman. After doing some Googling about Firebug functionality, I found console.log(). Now, I can do same thing by using Firebug Console.

saveBtn = dojo.widget.createWidget(“Button”, {caption: “Save Settings”}, dojo.byId(“saveBtn”));
console.log(saveBtn.caption);

At least it’s not messing up my screen. w00f! It also has different logging levels:

• console.debug()
• console.info();
• console.warn();
• console.error();
• console.trace();

For more, Console API