JSFiddle - React, Tailwind, and code Playground

HTML

<div id="ajax"></div>

JavaScript

var scriptThatWorks = [ 
        '<script type="text/javascript">',
        '//<![CDATA[<!--',
        "alert('Show Alert');",
        '//-->]]>' 
    ].join ( "\n" )

var scriptThatFails = [ 
        '<script type="text/javascript">',
        '<!--//--><![CDATA[//><!--',
        "alert('Show Alert');",
        '//--><!]]>' 
    ].join ( "\n" )

function inject( html ) {
    $( "#ajax" ).html( html ); 
}

inject( scriptThatWorks );

inject( scriptThatFails );