Is there a way to run R code from JavaScript?

Question

I am working on a project which requires some R code to be run for some data analysis. The project is primarily in JavaScript, and I need a way to run R code from JS. My researc

Answer 1

This is by no means the best way, but I was able to do the following for my own Javascript+R project (silly.r is an R script that lives in the "r" directory). I basically ran the R code as a terminal command from my express server:

app.get('/sfunction', function (req, res) {
    exec('Rscript r/silly.r this is a test', function(error, stdout, stderr) {
        if (error) {
            console.log(error);
            res.send(error);
        }
        else if (stderr) {
            console.log(stderr);
            res.send(stderr);
        }
        else if (stdout) {
            console.log("RAN SUCCESSFULLY");
            res.sendfile("savedoutput/test.json");
        }
    });
});

The code is from lines 167-182 from here: https://github.com/ngopal/VisualEncodingEngine/blob/master/jsserver/app.js