Ignore parent onclick when child onclick is clicked, using Javascript only

Question

An good example of what im trying to do is, think of instragram. When you are click on a photo, it opens a window with that photo plus the grey background. If you click anyw

Answer 1

You perhaps can take an inner div which is absolute that has the background and certain height and width which is equal to main parent div and that has all the style, so on click of that div you may close parent div and on image you need not to do anything.

So childdiv should have display none functionality. With JavaScript, you should be able to close parent div on a click of child div.