javascript - jQuery: prompt user when attempting to refresh or close browser -


scenario: have web app let user 1 set values in form (#div1) , display next user (who comes browser after user 1 without closing browser) (the display shown in #div2 while #div1 hidden). if user 2 refresh browser, values gone.

question: how can alert user when attempts refresh browser? web app on midori , web server cherrypy.

or there way save session regardless of refresh? , how?

are looking for

window.onbeforeunload = function(){     return "are sure want close window?"; }

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