Hi Dhanya,
    I guess you are setting breakpoints by double clicking on the
      left vertical ruler next to your line of code. If I understand you
      right, you locate your cursor in eg line 9, but the breakpoint
      will appear next to line 10, also in the Breakpoints view you will
      see something like: yourSourceFile.js [line: 10], correct?
    Would it be possible to share a code example to try to reproduce
      the problem?
    Christian
    
    
    On 26.02.2018 05:47, Dhanya Pradeep
      wrote:
    
    
      
        Hi,
         
         
            Thank you for providing the suggestions. We downloaded
            Oxygen and installed the _javascript_ Development tools
            available on Mars. We are
            able to set the breakpoints for very large scripts. But
            again with the specific
            script that I mentioned earlier, we face issues with setting
            breakpoints. I’m
            not sure whether I mentioned earlier, but this script
            includes both java and
            _javascript_ style of development. I’m not able to figure out
            whether this could
            lead to problems in setting breakpoints.
         
        Is
            there any Whitelist of blacklist of items that prevent
            setting breakpoints in the JSDT _javascript_ editor?
         
        Regards,
        Dhanya