darwinp

// Full Code
javascript:(function loadPage (){
  var url = 'https://example.com/node/';
  var nodeID = prompt("Node ID:", '');
  
  // Did you enter a value and is that value a number?
  if (nodeID != null && ( !isNaN(parseFloat(nodeID)) && isFinite(nodeID) )) {
    window.location.href= url + nodeID;
  }
})();