JSFiddle - React, Tailwind, and code Playground

HTML

<html>
    <head>
        <title>Repro AttrHref</title>
        <script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.4.min.js" type="text/javascript"></script>
    </head>
    <body>
        <a href="http://www.google.com" target="_blank">g@g</a>
    </body>
</html>

JavaScript

$(function () {
    $('a').attr('href', 'http://msn.com');
});