JavaScript DHTML/Node Operation/queryCommandState
"queryCommandState()" Example
<source lang="html4strict">
<html> <body> <script language="JavaScript"> function function1() {
var myText = document.selection.createRange(); if (!myText==""){ if (myText.queryCommandEnabled("Delete") == true) { document.execCommand("Delete"); } } var m = myText.queryCommandState("Delete"); if (m == false) { alert("Delete command has not been executed"); }
} </script>
Select text in this paragraph, and then click button.
<input type="button"
value="Click to delete selection and verify command state" onclick="function1();">
</body> </html>
</source>