JSFiddle - React, Tailwind, and code Playground
HTML
<a href="http://blah.com" onclick="_gaq.push(['_trackEvent','dude','dude','dude']);">TESTEST123</a>
JavaScript
$("a[href*='http:'][onclick*='_gaq']").each(function(e){
var href = this.href;
var onclick = $(this).attr('onclick');
var linker = "['_link', "+ "'"+href+"'"+"],";
var output = [onclick.substr(0,10), linker, onclick.substr(10), " return false;"].join('');
alert('output : '+output);
});