How to get selected value of a dropdown menu in ReactJS

Question

I\'m using react and I want to get the value of the selected option of a dropdown in react but I don\'t know how. Any suggestions? thanks! My dropdown is just a select like:

Answer 1

Implement your Dropdown as

 this.menu = input}>
    N/A
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Now, to obtain the selected option value of the dropdown menu just use:

let res = this.menu.value;