Found instructions for this topic:
- Download source code from
https://code.google.com/archive/a/eclipselabs.org/p/jsdt-jquery/source/default/source or https://github.com/Nodeclipse/jsdt-jquery - Unzip maven build the source code
- In eclipse Help-> Install New Software-> Add ...-> Archive ...-> / location_to_source_directory / org.eclipselabs.jsdt.updatesite / target / org.eclipselabs.jsdt.updatesite-1.9.0-SNAPSHOT-site .zip
- Give name -> Ok
Items 1,3,4 are clear. But point 2 is incomprehensible to me as a non-Java programmer. What version of Eclipse to use, how to compile for a specific version, etc. unclear. Please help.