Add the startswith function extension
#107
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He-Pin
reviewed
Aug 25, 2025
| @@ -13,6 +13,7 @@ These breaking changes apply to Python JSONPath in its default configuration. We | |||
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| **JSONPath function extension changes** | |||
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| - Added the `startswith(value, prefix)` function extension. `startswith` returns `True` if both arguments are strings and the second argument is a prefix of the first argument. See the [filter functions](https://jg-rp.github.io/python-jsonpath/functions/#startswith) documentation. | |||
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This can be implemented with regex, so this is for performance?
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Hi @He-Pin,
I have a use case where operators like and and or are preferable over && and ||, for example. Adding functions like startswith() where match() would do fits in well in that particular scenario.
Maybe non-standard function extension should be disabled in the new "strict" JSONPath environment 🤔
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we have something like this too, like isChiness to filter out Chinese text when we do TaoBao English.
Thanks for sharing
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Add the
startswithfunction extension.startswithreturnsTrueif both arguments are strings and the second argument is a prefix of the first argument. See the filter functions documentation.Closes #49