Access an existing copy of jQuery on the target page

Question

I am writing a small userscript to get some content from a server and add it to a tie.
The site has jQuery, how can I just use the site's jQuery instead of @require (because Chrome doesn't support this now)?

Answer 1

Use an existing copy of jQuery with code like this:

function main () {
    /*--- Put all of your code here.
        Use jquery with $ or however the target page uses it.
    */
}

function addJS_Node (text, s_URL, funcToRun) {
    var D                                   = document;
    var scriptNode                          = D.createElement ('script');
    scriptNode.type                         = "text/javascript";
    if (text)       scriptNode.textContent  = text;
    if (s_URL)      scriptNode.src          = s_URL;
    if (funcToRun)  scriptNode.textContent  = '(' + funcToRun.toString() + ')()';

    var targ = D.getElementsByTagName ('head')[0] || D.body || D.documentElement;
    targ.appendChild (scriptNode);
}

addJS_Node (null, null, main);