JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.1.js"></script>
    Enter the URL
    <input id="url" type="text"/>
    <button id="urlbutton">click me!</button>
    <iframe id="webiframeone" src ="https://www.wikipedia.org/"></iframe>
    <iframe id="webiframetwo"></iframe>

JavaScript

$(document).ready(function(){
    $("#urlbutton").click(function () { 
    var x = $("#url").val();
        $("#webiframetwo").attr('src', 'x');
    });
});