X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=_source%2Fplugins%2Fforms%2Fdialogs%2Fcheckbox.js;fp=_source%2Fplugins%2Fforms%2Fdialogs%2Fcheckbox.js;h=92bcddbcd0b6272dfbdde754760fa8d824884db5;hb=e7789c1ad838194d45eeee6ac2eb6e55f5cf35a1;hp=1016d38795fd397c35299119ed19d2134b065911;hpb=059b4c2fef02528bf1af189f7996e80652faddfb;p=ckeditor.git

diff --git a/_source/plugins/forms/dialogs/checkbox.js b/_source/plugins/forms/dialogs/checkbox.js
index 1016d38..92bcddb 100644
--- a/_source/plugins/forms/dialogs/checkbox.js
+++ b/_source/plugins/forms/dialogs/checkbox.js
@@ -91,7 +91,19 @@ CKEDITOR.dialog.add( 'checkbox', function( editor )
 							if ( value && !( CKEDITOR.env.ie && value == 'on' ) )
 								element.setAttribute( 'value', value );
 							else
-								element.removeAttribute( 'value' );
+							{
+								if ( CKEDITOR.env.ie )
+								{
+									// Remove attribute 'value' of checkbox #4721.
+									var checkbox = new CKEDITOR.dom.element( 'input', element.getDocument() );
+									element.copyAttributes( checkbox, { value: 1 } );
+									checkbox.replace( element );
+									editor.getSelection().selectElement( checkbox );
+									data.element = checkbox;
+								}
+								else
+									element.removeAttribute( 'value' );
+							}
 						}
 					},
 					{