Turning on error reporting for a JavaScript segment? -

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i haven't worked in js since 1999, i'm quite rusty. remember working in in past, , able enable kind of error reporting. right now, when have syntax error in script, no error reported in browser. there directive or enable error reporting in js file?

most scripts in wild full of crass errors browsers don't bother complain them more.

in ie default error indicator in left hand side of status bar can used display error. or can turn error alerts on internet options -> advanced -> browsing -> display notification every script error, make rest of internet unusably annoying.

in firefox, tools -> error console bring familiar javascript console.


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