Sharepoint - Javacript only executed on first page load

If you have Minimal Download Strategy enabled, you need to do it like this:

$(function () {
      ExecuteOrDelayUntilScriptLoaded(function () {
          if (typeof asyncDeltaManager != "undefined")
            asyncDeltaManager.add_endRequest(runYourCode);
          else runYourCode();
      }, "start.js");

  });

function runYourCode() {
    //your code
     return false;
}

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