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Archived discussions · Captured October 28, 2026

Autocomplete case insensitive, middle of word

Community Supportbokehjsserver
jgriffi6
jgriffi6

Hi,

Been using Bokeh for a couple years now and love it. Recently started using BokehServer and not sure why I hadn’t used it sooner. One thing that I am missing (from an Ajax+JS solution to interact w/ Server) is having a robust Autocomplete option. So two things I’d like to do:

  1. Search within word for possible completions (e.g. option ‘DL: Delta’ shows up when I type ‘Delta’)
  2. Case insensitivity: (e.g. option ‘DL: Delta’ shows up when I type ‘dl’)

Is this already possible? And I am missing how to setup the autocomplete widget properly? If not, where would I play around to try and implement it my self? BokehJS?

Thanks,
Justin

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Bryan
Bryan

Thanks for the kind words @jgriffi6. The build in Autocomplete widget is fairly basic and has not gotten much attention. If you wanted to try extending or improving it, the relevant source file is here:

You would need to build BokehJS as described in the Developer’s Guide and run a Bokeh server app to test with the local BokehJS you built (or use BOKEH_RESOURCES=inline for a standalone script). If you want to add new properties for additional configuration options, the corresponding Python class will also need updating to match.

Happy to answer questions/discuss if you actually start tinkering (though the “Development” Category might be a better location than Community Support).

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Bryan
Bryan

One possible idea, since there’s likely an infinite amount of variation and control different users might want or expect, would be to add a property for some sort of CustomJS-like policy that can be used to process the user input and return completions (either from those supplied to the Bokeh model, or potentially even from some external API)

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jgriffi6
jgriffi6

Hi Bryan,

I’ll play around with the code. Looking at this line:

I am thinking something like this may work:

text.toLowerCase().includes(value.toLowerCase())

not sure how much performance would be impacted. Also, I seem to remember Explorer not liking the includes function.

If I have something I’ll move to the Dev page and potentially make a merge request. Agreed that having some flexibility would be nice as well.

Thanks,
Justin

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