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  <meta charset="utf-8">

  <title>stop() — conditional</title>

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<body>

  <pre id="out">Watching document.readyState…</pre>

  <script>

    var out = document.getElementById("out");

    var MAX_WAIT = 5000;



    function logState(label) {

      out.textContent = label + " — readyState: " + document.readyState;

    }



    logState("Started");



    setTimeout(function () {

      if (document.readyState !== "complete") {

        window.stop();

        logState("Loading stopped — took too long");

      } else {

        logState("Already complete — stop() not needed");

      }

    }, MAX_WAIT);

  </script>

</body>

</html>

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JavaScript stop() — conditional timeout (Try It)