JSFiddle - React, Tailwind, and code Playground

HTML

<div id="group">
<input type="text" placeholder="foo" /><br>
<input type="text" placeholder="bar" />
</div>
<button id="toggleFields">swap fields</button>

CSS

.disabled{
    
}

JavaScript

inputFields = $("#group").find("input");
inputFields[1].disabled = true;

$("#toggleFields").on("click", function(){
    inputFields.each(toggleElement);        
});

function toggleElement(index, element) {
    element.disabled = !element.disabled;
    //idea from: http://stackoverflow.com/a/4702086/1063730
}