I have some Javascript code.
I want to trace errors and debug it.
how to do it ?
I have some Javascript code. I want to trace errors and debug it. how
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I have some Javascript code.
I want to trace errors and debug it.
how to do it ?
It used to be that debugging in javascript was quite limited. You could post alerts to indicate variable states or print information to the web page. In the case of syntax error, it would simply not execute all the code (meaning you had to place alerts prior to the error to know where it was).
Thankfully, browsers have caught up. Firebug is very useful as well as Chrome’s developer tools which both use breakpoints, expression evaluation, as well as a series of other useful tools for debugging in-browser. I would suggest you look into these. I believe also internet explorer has a developer tools section, but I’ve found that it isn’t to my liking, however you’re free to use whatever you need/require.