Source : React Native Convert Text to Upper Case or Lower Case on Button Click
This tutorial explains how to convert text to upper case or lower case on button click in react native application. In this example we are going use toUpperCase() and toLowerCase() Javascript function to convert upper case or lower case letter in react native application.
toUpperCase() is used to convert all the text component text to Upper Case (Capitalize).
toLowerCase() function is used to transform all text into lower case.
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