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Swan The Human
Full Stack JavaScript Techdegree Student 19,338 PointsWhy are you joining the spaces in the query?
Just wondering what the purpose of the const query = process.argv.slice(2).join(' ');
is.
Im sure an explanation will explain it properly but can anyone show me an example of whats being joined and why?
2 Answers
Steven Parker
231,236 PointsIn the video, the "join" uses and underscore ("_") instead of a space, but the concept is the same.
The special object attribute "process.argv" stores the terms that were used on the command line in an array, and "slice" with an argument of 2 removes the first two terms and returns the rest. So if the program was started with the command "node myprogram Cleveland Ohio", then the slice would return the array: ["Cleveland", "Ohio"]. Then the "join" converts the array into a single string, which in this case would be "Cleveland Ohio" (the one in the video would make "Cleveland _Ohio").
Kylie Soderblom
3,890 PointsAs of 2021 the available teacher's notes recommend in app.js const query = process.argv.slice(2).join(" ");