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Editorial Team
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Asked: 2026-06-11T17:31:24+00:00

Using UiApp to collect data from a form, but I have users double clicking

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Using UiApp to collect data from a form, but I have users double clicking the submit button. This runs doPost twice. Granted, they have to click mighty fast to get it to actually post twice, but it happens.

My questions is: has anyone had experience in disabling the submit button, say with an onMouseUp? Is there a better way to do this? I’ve been told to be wary of adding multiple onClick handlers to buttons, as it can be unstable. Any stable solutions to this?

I have to use a submit button as there is a file upload in the form.

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1 Answer

  1. Editorial Team

    I’ve faced this problem and ever since Google introduced ClientHandlers, there is a way out.
    Just add a client handler to your submit button disabling it (and remember to enable it when you are done with the server handler function or doPost) 

    var plswait = app.createClientHandler().forEventSource().setEnabled(false).setText('Please wait...'); 
var btnSubmit = app.createSubmit().addMouseDownHandler(plswait);

    is my favourite.

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