Add XPath to chrome extension or into javascript

Question

I'm making chrome extension and i need to have xpath in it, it dose not work even when i add jquery in to the manifest.

ERROR:

Uncaught ReferenceError: $x is not defined

MANIFEST:

"permissions": [

"activeTab",

"*://www.znamky.zsunesco.cz/*"

],

"content_scripts": [

  {

    "matches": ["http://znamky.zsunesco.cz/*"],

    "js": ["jquery-1.11.3.min.js", "Script.js"]

  }

]

SCRIPT:

$x("//div[@class='nazevprdiv' and ./a[text()='"+name+"']]/../../td/table/tbody/tr[@class='detznamka']/td");

Answer 1

Like adelphus said, it's only a variable usd by Firebug as an xpath shortcut. You can implement it with this code:

function $x(path){
 var xpath = document.evaluate(path, document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
   var temp = [];
   for (var i = xpath.snapshotLength - 1; i >= 0; i--) {
     temp.push(xpath.snapshotItem(i));
   }
   return temp;
}