1var colors = ["red", "blue", "green"];
2var colorsString = colors.join(","); //"red,blue,green"

1const arrayToCSV = (arr, delimiter = ',') =>
2  arr.map(v => v.map(x => `"${x}"`).join(delimiter)).join('\n');

1var objectToCSVRow = function(dataObject) {
2    var dataArray = new Array;
3    for (var o in dataObject) {
4        var innerValue = dataObject[o]===null?'':dataObject[o].toString();
5        var result = innerValue.replace(/"/g, '""');
6        result = '"' + result + '"';
7        dataArray.push(result);
8    }
9    return dataArray.join(' ') + '\r\n';
10}
11
12var exportToCSV = function(arrayOfObjects) {
13
14    if (!arrayOfObjects.length) {
15        return;
16    }
17
18    var csvContent = "data:text/csv;charset=utf-8,";
19
20    // headers
21    csvContent += objectToCSVRow(Object.keys(arrayOfObjects[0]));
22
23    arrayOfObjects.forEach(function(item){
24        csvContent += objectToCSVRow(item);
25    }); 
26
27    var encodedUri = encodeURI(csvContent);
28    var link = document.createElement("a");
29    link.setAttribute("href", encodedUri);
30    link.setAttribute("download", "customers.csv");
31    document.body.appendChild(link); // Required for FF
32    link.click();
33    document.body.removeChild(link); 
34}
35