Return the designMode of the current document:
var x = document.designMode;
The designMode property sets, or returns, whether the document is editable or not.
Click the button to see get the value of the designMode property:
<!DOCTYPE html> <html> <body> <button onclick="myFunction()">Get the designMode</button> <p id="demo"></p> <script> function myFunction() {/* ww w.ja v a 2 s .co m*/ var x = document.designMode; document.getElementById("demo").innerHTML = x; } </script> </body> </html>