context_menu.html - Android社区 - https://www.androidos.net.cn/

<html>
  <head>
    <title>context menu</title>
    <meta http-equiv="x-ua-compatible" content="chrome=1" />
    <script type="text/javascript" src="chrome_frame_tester_helpers.js">
    </script>
    <script>
    // Default text value used to test cut/copy/paste etc.
    var INIT_VAL = "SomeInitializedTextValue";

    // Verify the expected result based on action and post message to host.
    function verifyTextFieldContents(event) {
      var textField = document.getElementById("textField");
      var selectedValue = textField.value.substring(textField.selectionStart,
          textField.selectionEnd);

      if (selectedValue == INIT_VAL) {
        window.externalHost.postMessage("OK");
      } else {
        window.externalHost.postMessage("Fail");
      }
    }

    // Do some initialization work like setting text field value, 
    // and selecting the value by default before the test starts.
    function init() {
      var action = getURLParameter("action");

      document.getElementById("textField").value = INIT_VAL;
      document.getElementById("textField").focus();
      if (action != "selectall") {
        document.getElementById("textField").select();
      }

      window.externalHost.onmessage = verifyTextFieldContents;
    }
    </script> 
  </head>

  <body leftmargin="0" topmargin="0" onload="init()">
    <input type="text" name="textField" id="textField" size="25" value=""></td>
  </body>
</html>