Add CSVToJSON

snippets/CSVToJSON.md

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+### CSVToJSON
+
+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.slice()` and `Array.indexOf('\n')` and `String.split(delimiter)` to separate the first row (title row) into values.
+Use `String.split('\n')` to create a string for each row, then `Array.map()` and `String.split(delimiter)` to separate the values in each row.
+Use `Array.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 `,`.
+
+```js
+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), {});
+  });
+}
+```
+
+```js
+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'}];
+```