How to validate forms in a simple project?

In projects that are written in React, I use redux-form, formic, yup (depending on task)... These technologies, through documentation, clear examples, and the structure give quite a good methods of architecture to validate large forms and small...
What are the techniques, the technology can be used in projects written in native js ?
PS At the moment in some projects, there are many hand-rolled crutches for validation. from which I would like to get rid of...
April 19th 20 at 12:09
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