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JavaScript disable button

Posted on 2013-01-28
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Last Modified: 2013-01-29
How would I go about disabling a .Net button on Click event using JavaScript?
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Question by:lrbrister
5 Comments
 
LVL 41

Accepted Solution

by:
guru_sami earned 350 total points
ID: 38829316
There are several ways. Here's one:
function Disable(btn) {
            btn.disabled = true;
        }
<asp:Button ID="btnSave" runat="server" Text="Button" OnClientClick="Disable(this);" />

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LVL 20

Assisted Solution

by:Russ Suter
Russ Suter earned 150 total points
ID: 38829400
The above will disable the button. If you want to prevent the button from running server-side code then you can use this:

<asp:Button ID="btnSave" runat="server" Text="Button" OnClientClick="return false;"></asp:button>

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You can augment this system by returning the value of any function. I've found this handy in the past. For example, you could write a javascript function which asks the user for confirmation via the "confirm" javascript method. If they don't confirm then return false. It might look like this:

function foo()
{
    if (!confirm("Are you sure?"))
    {
        return false;
    }
    return true;
}

<asp:Button ID="btnSave" runat="server" Text="Button" OnClientClick="return foo();"></asp:button>

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LVL 10

Expert Comment

by:Monica P
ID: 38829920
<asp:Button ID="Button1" runat="server" Text="Button"  onclientclick="disableBtn"/>

<script type="text/javascript">
    function disableBtn()
    {
    var btn= document.getElementById("<%=Button1.ClientID%>");
    btn.disabled=true;
    }
</script>



get the button id

Var button1=document.getElementById('<%= btnName.ClientID %>')
button1.style.display="block";

or

document.getElementById("button1").style.display="block";

or disable like this

btnName.Attributes.Add("onclick", "this.disabled=true;" + GetPostBackEventReference(btnName).ToString());

incase of restricting multiple click on postback

http://encosia.com/disable-a-button-control-during-postback/
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LVL 10

Expert Comment

by:Monica P
ID: 38829923
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Author Closing Comment

by:lrbrister
ID: 38831027
You guys were first.
Thanks
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