Date: 06/15/05 (Javascript Community)    Keywords: no keywords

Hello again... I'm back for round 2. Before my other post starts to get off topic, I thought I'd start a new one... on debugging JS. What are your thoughts? Anyone have some tips or tricks?

I am not totally new to JS, but really haven't used it all that much up until recently. I used to program in C++ at my first job (about 3 years), then I quit there, and at the new job there is a scarcity of anything that cool... the closest I get is JS. But, I'm finding it is almost as fun- despite how tiny it is in comparison. Ok, enough with the boring stuff, here is something I thought was mega cool:

The eval() function. In conjunction with an or two, it seems to have endless possibilities! Let's say you had a couple text boxes (I like textarea's for this purpose).. named "_input" and "_output". Then you have a button, which will eval() the contents of "_input" and print them to "_output":

alert('hi'); // and you get an alert!
myVar01 = 'hi'; // you've just declared a new global var
alert(myVar01);
myNewFunc = function(str){alert(str);} // new global func!
myNewFunc('hello world'); // that you can call right away
this.myNewFunc; // and retrieve the definition of!

Source: http://www.livejournal.com/community/javascript/69401.html