elof

Task	Code
Change the background color of '#target' by script.	$('#target').css('background', 'blue');
Change the text in the span, a child of '#target'	$('#target span').text('foo:bar');
Create a clone of the span in '#target' and position it under the orgin.	$('#target span').clone().insertAfter('#target span');
Change background color of the second of three '.target'.	$('.target').eq(1).css('background', 'blue');
Disable the button	$('.target button').attr('disabled', 'disabled');
Uncheck the boxes	$('.target input').removeAttr('checked');
Move '#child' from '#parent1' to '#parent2'	$('#child').appendTo('#parent2');
Make the textbox in '#target' read-only	$('#target input').attr('readonly', 'readonly')