Confirmation Dialog on Browser close Button using JavaScript in ASP.Net

Question

Hi I have firstform secondform and thirdform in aspnet But I want when I click to close button not different form firstform secondform or thirdform before close show message Do you want close form if click yes close form else click cancel or no not closed form

dharmendr · Accepted Answer

Hi  PRARefer the below codelthtml xmlns34httpwwww3org1999xhtml34gtlthead runat34server34gt    lttitlegtlttitlegt    ltscript type34textjavascript34gt        windowonbeforeunload  function e             e  e  windowevent             For IE and Firefox prior to version 4            if e                 ereturnValue  39Are you sure close the window39                         For Safari            return 39Are you sure close the window39            ltscriptgtltheadgtltbodygt    ltform id34form134 runat34server34gt    ltdivgt        Test    ltdivgt    ltformgtltbodygtlthtmlgtDemo

Confirmation Dialog on Browser close Button using JavaScript in ASP.Net

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