Understanding unreachable breakpoints in IE11 F12 Developer tools

Question

I have an issue I'm trying to debug on our website, where a particular javascript routine is not being found. I'm at a loss to identify why, but my thinking is that if the F12 Dev tools can't reach the code for some reason, then anything in that script block is inaccessible and will not be executed.

Is there somewhere I can look to for an explanation of why code in one script block is reachable, and another, seemingly identical block is unreachable?

Answer 1

replace with language="javascript" or remove language="JavaScript"

As per https://msdn.microsoft.com/en-us/library/ms533940(v=vs.85).aspx for attribute language.

javascript

Script is JavaScript.

Please refer this and this