Apply new format to snippets and template
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@ -5,10 +5,10 @@ tags: array,string,object,advanced
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Converts an array of objects to a comma-separated values (CSV) string that contains only the `columns` specified.
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Use `Array.prototype.join(delimiter)` to combine all the names in `columns` to create the first row.
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Use `Array.prototype.map()` and `Array.prototype.reduce()` to create a row for each object, substituting non-existent values with empty strings and only mapping values in `columns`.
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Use `Array.prototype.join('\n')` to combine all rows into a string.
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Omit the third argument, `delimiter`, to use a default delimiter of `,`.
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- Use `Array.prototype.join(delimiter)` to combine all the names in `columns` to create the first row.
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- Use `Array.prototype.map()` and `Array.prototype.reduce()` to create a row for each object, substituting non-existent values with empty strings and only mapping values in `columns`.
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- Use `Array.prototype.join('\n')` to combine all rows into a string.
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- Omit the third argument, `delimiter`, to use a default delimiter of `,`.
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```js
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const JSONtoCSV = (arr, columns, delimiter = ',') =>
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@ -26,4 +26,4 @@ const JSONtoCSV = (arr, columns, delimiter = ',') =>
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```js
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JSONtoCSV([{ a: 1, b: 2 }, { a: 3, b: 4, c: 5 }, { a: 6 }, { b: 7 }], ['a', 'b']); // 'a,b\n"1","2"\n"3","4"\n"6",""\n"","7"'
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JSONtoCSV([{ a: 1, b: 2 }, { a: 3, b: 4, c: 5 }, { a: 6 }, { b: 7 }], ['a', 'b'], ';'); // 'a;b\n"1";"2"\n"3";"4"\n"6";""\n"";"7"'
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```
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```
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