window.onbeforeunload not working in chrome [duplicate]

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Possible Duplicate:

window.onb开发者_C百科eforeunload not working in chrome

window.onbeforeunload=function(); is not working in chrome.. It works for IE and Mozila but it not works for chrome.. Is there any another way to use window.onbeforeunload=function(); in chrome......... Thanks in advance.......

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I have tested the following in Chrome and it works...

    window.onbeforeunload = function () {
        alert("Hello");
    };