JavaScript DHTML/Node Operation/queryCommandEnabled

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"queryCommandEnabled()" Example

    
<html>
<body>
<script language="JavaScript">
function function1() {
    var myText = document.selection.createRange();
    if (myText.queryCommandEnabled("Delete") == true) {
      document.execCommand("Delete");
    }
} 
</script>
<p id="myText">Sample text to be selected and deleted.</p>
<input type="button" value="Delete selection" onclick="function1();">
</body>
</html>
Источник — «http://wbex.ru/index.php?title=JavaScript_DHTML/Node_Operation/queryCommandEnabled&oldid=3345»