Javascript if statement ignored

Question

i'm new to asp.net and busy with a tutorial website.

I'm trying to call a server side function using an if statement, the problem is that the if statement is completely ignored i.e the function is called regardless.

This works when using a normal js alert

code below:

$(function () {
    $("#idnum").keyup(function () {
        if (this.value.length == 13) { 
            <%= TextBox1_TextChanged(this, idnum.Text) %> ; 
            //call code behind function to get contact info with ID
        }
    });
});

You can't call server methods like that. Your method is called when the page is generated not by the JavaScript code. — Stilgar, Feb 07 '14 at 13:40
You just can't do this. The fact it works with an alert is because you're rendering text from server, then executiong client code (javascript). — Laurent S., Feb 07 '14 at 13:41

score 2 · Accepted Answer · answered Feb 07 '14 at 13:41

2

You can't invoke server side methods on client with your code. Try to use PageMethods in order to call server side method from client.

answered Feb 07 '14 at 13:41

hkutluay

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i have used the PageMethods as below but this is not calling the function – Beamo Feb 07 '14 at 14:06
$(function () { $("#idnum").keyup(function () { if (this.value.length == 13) { PageMethods.getID(this.value); //call code behind function to get contact info with ID } }); }); – Beamo Feb 07 '14 at 14:06
Before running the code don't forget to include the Script Manager in your aspx page and also enable the page methods. – hkutluay Feb 07 '14 at 14:07
i have also tried to use scriptmethod as suggested here [link](http://stackoverflow.com/questions/10658061/calling-asp-net-page-method-from-javascript-not-working) – Beamo Feb 07 '14 at 14:12

Javascript if statement ignored

1 Answers1