25 lines
956 B
Markdown
25 lines
956 B
Markdown
---
|
|
title: CSVToArray
|
|
tags: string,array,utility,intermediate
|
|
---
|
|
|
|
Converts a comma-separated values (CSV) string to a 2D array.
|
|
|
|
Use `Array.prototype.slice()` and `Array.prototype.indexOf('\n')` to remove the first row (title row) if `omitFirstRow` is `true`.
|
|
Use `String.prototype.split('\n')` to create a string for each row, then `String.prototype.split(delimiter)` to separate the values in each row.
|
|
Omit the second argument, `delimiter`, to use a default delimiter of `,`.
|
|
Omit the third argument, `omitFirstRow`, to include the first row (title row) of the CSV string.
|
|
|
|
```js
|
|
const CSVToArray = (data, delimiter = ',', omitFirstRow = false) =>
|
|
data
|
|
.slice(omitFirstRow ? data.indexOf('\n') + 1 : 0)
|
|
.split('\n')
|
|
.map(v => v.split(delimiter));
|
|
```
|
|
|
|
```js
|
|
CSVToArray('a,b\nc,d'); // [['a','b'],['c','d']];
|
|
CSVToArray('a;b\nc;d', ';'); // [['a','b'],['c','d']];
|
|
CSVToArray('col1,col2\na,b\nc,d', ',', true); // [['a','b'],['c','d']];
|
|
``` |