Not understanding the code written in angular 7

[Akshay malvankar]

Hey i am little beat confused what code is actually doing following is 2 function 

downloadFile(data, filename = 'data') {

        let csvData = this.ConvertToCSV(data, [

            'name', 'age', 'average', 'approved', 'description'

        ]);

        console.log(csvData)

        let blob = new Blob(['\ufeff' + csvData], {

            type: 'text/csv;charset=utf-8;'

        });

        let dwldLink = document.createElement("a");

        let url = URL.createObjectURL(blob);

        // let isSafariBrowser = navigator.userAgent.indexOf(

        //     'Safari') != -1 & amp; & amp;

        navigator.userAgent.indexOf('Chrome') == -1;

        // /if Safari open in new window to save file with random filename. 

        // if (isSafariBrowser) {

        //     / 

        //     dwldLink.setAttribute("target", "_blank");

        // }

        dwldLink.setAttribute("href", url);

        dwldLink.setAttribute("download", filename + ".csv");

        dwldLink.style.visibility = "hidden";

        document.body.appendChild(dwldLink);

        dwldLink.click();

        document.body.removeChild(dwldLink);

    }

    ConvertToCSV(objArray, headerList) {

        var array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray;

        var str = '';

        var row = "";

        for (var index in objArray[0]) {

            //Now convert each value to string and comma-separated

            row += index + ',';

        }

        row = row.slice(0, -1);

        //append Label row with line break

        str += row + '\r\n';

        for (var i = 0; i < array.length; i++) {

            var line = '';

            for (var index in array[i]) {

                if (line != '') line += ','

                line += array[i][index];

            }

            str += line + '\r\n';

        }

        return str;

    }

}

can anyone explain me what this 2 function is doing by line by line please

[Sander Elias]

Hi Akshay,

There is nothing angular specific in that code.
The first function creates a link that downloads a file that is created from a string.

The second creates an csv syring from an array.

Regards

Sander