Question

13

Javascript onload and onunload

rated 0 times [ 18] [ 5] / answers: 1 / hits: 58617 / 12 Years ago, wed, march 28, 2012, 12:00:00

Consider the following HTML snippet containing some javascript utilizing prompt and unload. The prompt() method works fine but I want alerting something like Goodbye, user when reloading or leaving the page. Any help is greatly appreciated.

<body onload=promptName() >





        <script type=text/javascript>

        function promptName()

        {

            var userName = prompt(What's your name ?, )

            return userName;

        }



        function goodBye()

        {

            alert(Goodbye,  + promptName() + !);

        }



        window.onunload = goodBye();



        </script>



  </body>

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jaden

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2 Years ago

answered 12 Years ago andreguym · Accepted Answer

You should write it like this:

window.onunload = goodBye;

Also, you might consider using the onbeforeunload event in some browsers:

window.onbeforeunload = goodBye;

When you write window.onunload = goodBye(); you assign whatever handler that is returned from goodBye to the unload event. Since nothing is returned, there will be no event handler. You need to reference the function instead: window.onunload = goodBye;