[youtubei.js](../../../../README.md) / [Utils](../README.md) / getStringBetweenStrings # Function: getStringBetweenStrings() > **getStringBetweenStrings**(`data`, `start_string`, `end_string`): `string` \| `undefined` Defined in: [src/utils/Utils.ts:84](https://github.com/LuanRT/YouTube.js/blob/faaf5fc5c15ff93eac8442b2fbdb4767d9a47b3f/src/utils/Utils.ts#L84) Finds a string between two delimiters. ## Parameters ### data `string` the data. ### start\_string `string` start string. ### end\_string `string` end string. ## Returns `string` \| `undefined`