Why doesn't my form post when I disable the submit button to prevent double clicking?

Question

Like every other web developer on the planet, I have an issue with users double clicking the submit button on my forms. My understanding is that the conventional way to han

Answer 1

document.getElementById('form1').onsubmit = function() {
    document.getElementById('btn').disabled = true;
};

Answer 2

Make sure that your javascript function returns true (or a value that would evaluate to boolean true), otherwise the form won't get submitted.

function btn_click()
var chk = document.getElementById("chk");
    if(chk.checked)
    {
            var btn = document.getElementById("btn");
            btn.disabled = true;
            return true;   //this enables the controls action to propagate
    }
    else    return false;  //this prevents it from propagating
}

Answer 3

We use the following JQuery script, to disable all buttons (input type=submit and button), when one button is clicked.

We just included the script in a global JavaScript file, so we don't have to do remember anything when creating new buttons.

$(document).ready(function() {
    $(":button,:submit").bind("click", function() {
        setTimeout(function() {
            $(":button,:submit").attr("disabled", "true");
        }, 0);
    });
});

This script could easily be extended with a check for Page_ClientValidate().

Answer 4

This is the correct and simple way to do this:

It works in all browsers (unlike the accepted solution above).

Create a helper method in your application (say in a Utlity Namespace):

    Public Shared Sub PreventMultipleClicks(ByRef button As System.Web.UI.WebControls.Button, ByRef page As System.Web.UI.Page)
        button.Attributes.Add("onclick", "this.disabled=true;" + page.ClientScript.GetPostBackEventReference(button, String.Empty).ToString)
    End Sub

Now from the code behind of each of your web pages you can simply call:

    Utility.PreventMultipleClicks(button1, page)

where button1 is the the button you want to prevent multiple clicks.

What this does is simply sets the on click handler to: this.disabled=true

and then appends the buttons own post back handler, so we get:

onclick="this.disabled=true";__doPostBack('ID$ID','');"

This does not break the default behaviour of the page and works in all browsers as expected.

Enjoy!