JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" value='Export to csv' onclick="cellsToCSV()" >

JavaScript

function cellsToCSV(){
var out='';
    out+="1,val1,val2,val3,val4\n";
    out+="2,val1,val2,val3,val4\n";
    out+="3,val1,val2,val3,val4\n";

console.log(out);
}