CSV to JSON
Converts a comma-separated values (CSV) string to a 2D array of objects. The first row of the string is used as the title row.
- Use
Array.prototype.indexOf()
to find the first newline character (\n
). - Use
Array.prototype.slice()
to remove the first row (title row) andString.prototype.split()
to separate it into values, using the provideddelimiter
. - Use
String.prototype.split()
to create a string for each row. - Use
String.prototype.split()
to separate the values in each row, using the provideddelimiter
. - Use
Array.prototype.reduce()
to create an object for each row's values, with the keys parsed from the title row. - Omit the second argument,
delimiter
, to use a default delimiter of,
.
const CSVToJSON = (data, delimiter = ',') => { const titles = data.slice(0, data.indexOf('\n')).split(delimiter); return data .slice(data.indexOf('\n') + 1) .split('\n') .map(v => { const values = v.split(delimiter); return titles.reduce( (obj, title, index) => ((obj[title] = values[index]), obj), {} ); }); }; CSVToJSON('col1,col2\na,b\nc,d'); // [{'col1': 'a', 'col2': 'b'}, {'col1': 'c', 'col2': 'd'}]; CSVToJSON('col1;col2\na;b\nc;d', ';'); // [{'col1': 'a', 'col2': 'b'}, {'col1': 'c', 'col2': 'd'}];