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<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Run Scripts</title>
</head>
<body>
  <div id="target">Click me</div>
  <script>
    document.getElementById("target").onclick = function() {
      display("Updating div");
      this.innerHTML =
        "Updated with script" +
        "<div id='sub'>sub-div</div>" +
        "<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js'></scr" + "ipt>" +
        "<script>" +
        "display('Script one run');" +
        "function foo(msg) {" +
        "    display(msg); " +
        "}" +
        "</scr" + "ipt>" +
        "<script>" +
        "display('Script two run');" +
        "foo('Function declared in script one successfully called from script two');" +
        "$('#sub').html('updated via jquery');" +
        "</scr" + "ipt>";
      runScripts(this);
    };
    function runScripts(element) {
      var scripts;
  
      // Get the scripts
      scripts = element.getElementsByTagName("script");
​
      // Run them in sequence (remember NodeLists are live)
      continueLoading();
​
      function continueLoading() {
        var script, newscript;
​
        // While we have a script to load...
        while (scripts.length) {
          // Get it and remove it from the DOM
          script = scripts[0];
          script.parentNode.removeChild(script);
​
          // Create a replacement for it
          newscript = document.createElement('script');
​
          // External?
          if (script.src) {
            // Yes, we'll have to wait until it's loaded before continuing
            display("Loading " + script.src + "...");
            newscript.onerror = continueLoadingOnError;
            newscript.onload = continueLoadingOnLoad;
            newscript.onreadystatechange = continueLoadingOnReady;
            newscript.src = script.src;
          }
          else {
            // No, we can do it right away
            display("Loading inline script...");
            newscript.text = script.text;
          }
​
          // Start the script
          document.documentElement.appendChild(newscript);
​
          // If it's external, wait for callback
          if (script.src) {
            return;
          }
        }
​
        // All scripts loaded
        newscript = undefined;
​
        // Callback on most browsers when a script is loaded
        function continueLoadingOnLoad() {
          // Defend against duplicate calls
          if (this === newscript) {
            display("Load complete, next script");
            continueLoading();
          }
        }
​
        // Callback on most browsers when a script fails to load
        function continueLoadingOnError() {
          // Defend against duplicate calls
          if (this === newscript) {
            display("Load error, next script");
            continueLoading();
          }
        }
​
        // Callback on IE when a script's loading status changes
        function continueLoadingOnReady() {
​
          // Defend against duplicate calls and check whether the
          // script is complete (complete = loaded or error)
          if (this === newscript && this.readyState === "complete") {
            display("Load ready state is complete, next script");
            continueLoading();
          }
        }
      }
    }
    function display(msg) {
      var p = document.createElement('p');
      p.innerHTML = String(msg);
      document.body.appendChild(p);
    }
  </script>
</body>
</html>
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