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Calling a Java script method from Asp.net, plus why is false returned?


Hi, my Java Script is a little weak so bear with me.
My situation is that I have an Asp.net button. When it is pressed, it returns "false"
and my Ajax code works great. I need to enhance the code so that not only does it return
false, but it also calls another Java script method.

I tried returning false from the new Java script method, but it is not working for me. Can anyone tell me
what I need to do in order to have my New method called and then also to return false?

Here is my current code:
<asp:Button ID="btn_Animate" runat="server" Text="Animate" OnClientClick= "return false;" />


I need to enhance it so that it calls this method and also returns false. Note that I tried using the following
method but it did not work.


<script type="text/javascript">
function NewMethod(coord1,coord2) {

    coord1 = coord1 + coord2;
    return false;
}
</script>

Also dear experts I don't understand why false is returned in the first place? maybe you could help me understand
that as well. I will increase the points to accomidate the extra help in explaing why false need to be returned.
0
brgdotnet
Asked:
brgdotnet
  • 2
2 Solutions
 
ddayx10Commented:
Two options:

<asp:Button ID="btn_Animate" runat="server" Text="Animate" OnClientClick= "return NewMethod('parm1','param2');" />
<script type="text/javascript">
function NewMethod(coord1,coord2) {

    coord1 = coord1 + coord2;
    return false;
}
</script>


OR

<asp:Button ID="btn_Animate" runat="server" Text="Animate" OnClientClick= "NewMethod('parm1','param2'); return false;" />
<script type="text/javascript">
function NewMethod(coord1,coord2) {

    coord1 = coord1 + coord2;
}
</script>
0
 
mallcoreCommented:
How about we do it something like this


<asp:Button ID="btn_Animate" runat="server" Text="Animate" OnClientClick= "return NewMethod();" />
<script type="text/javascript">
function NewMethod(coord1,coord2) {
 
    coord1 = coord1 + coord2;
    return coord1;
}
</script>

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0
 
ddayx10Commented:
Ah I forgot to answer the "Why is it false?" part.

Well if you return true from an action, let's say a button click, then the normal operation of that action will continue. In the case of a submit button it will post back the page. In the case of a link it would take you to another page.

If you return false from an action then the initial action is canceled. Button no longer causes the page to post back, just the JS function runs...etc.
0
 
brgdotnetcontractorAuthor Commented:
Thanks guys, you are awesome! It was the "return" part of the code that I was missing on the onButtonClick. So it is working now just great.
ddayx10 was the first to answer so I will give him the most point.

I need to take the time to figure out how to help others on this forum, as I would like to respond to other peoples questions as they need help. Have a great holiday!
0
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