Showing alert message using jquery

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I have button "btnSave" in my aspx page. in its click event it execute save() method. I want to show alert if any textbox "tstOperation" remain empty. I have to use jquery to show this alert. Please help me.

Posted 30-Aug-14 22:05pm

Sumon562

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surajsurve · Answer 1 · 2014-08-30T22:18:00

Solution 1

C#

function check() {
    var textBox =  $.trim( $('#tstOperation').val() )
    if (textBox == "") {
        alert('Please enter text');
       return false;
    }
}

Call this method on your save button's "onclientclick" event.
onclientclick="return check();"

Posted 30-Aug-14 22:18pm

surajsurve

Updated 30-Aug-14 22:22pm

v2

Sandeep Singh Shekhawat · Answer 2 · 2014-08-31T03:44:00

Hi,

Its seems like that you are going to implement js valiadtion on your form using jQuery. To achive goal we follows few steps such as

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="TestDemo._Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
<script type="text/javascript" src="http://code.jquery.com/jquery-1.11.1.min.js"></script>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

<asp:TextBox ID="txtOperation" runat="server">
<asp:Button ID="btnSave" runat="server" Text="Save" OnClientClick="return save()" />