JSFiddle - React, Tailwind, and code Playground

by m v

HTML

<select id="ttype" onchange="changeDrop()">
    <option value="Alice">Alice</option>
    <option value="Bob">Bob</option>
    <option value="Common">Common</option>
</select>

<select id="aap_name">
    <option value="Alice">Alice</option>
    <option value="Bob">Bob</option>
    <option value="Common">Common</option>
</select>

JavaScript

function changeDrop() {
    var val= document.getElementById("ttype").value;
    if(val == "Common") $("#aap_name").attr("disabled", "disabled");
    else  $("#aap_name").removeAttr("disabled");
};