Tuesday, March 4, 2014

Jquery Code to get ASP.Net Text Box Text Length, Text Box value and Change Text Box Value

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In this article I am going to explain how to get the Length of Text box text, Value of Text box control and change the value of text box value using Jquery Code.
val() function is used to get the value of text box value.
val().length used to get the length of text entered in the text box.
val('some text') used to change the text box value.

Jquery Code along with HTML to Get Asp.net Text Box Value, Get Length of Text Box Value and Change Value of Text Box :

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="textbox.aspx.cs" Inherits="textbox" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <script src="//code.jquery.com/jquery-1.10.2.min.js" type="text/javascript"></script>
   <script type="text/javascript">
   $(document).ready(function () { 

   //Get text box value
   $('#Button1').click(function () {

       var textvalue = $('#txtName').val();

   //Get Length of Text Box
   $('#Button2').click(function () {

       var textvaluelen = $('#txtName').val().length;

   //Change the Text Box Value
   $('#Button3').click(function () {

 var changetext = $('#txtName').val('Sohan Kumar');


    <form id="form1" runat="server">
    <asp:TextBox ID="txtName" runat="server" Text="Sumit Sharda"  ></asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" Text="Get Text Box Value" ClientIDMode="Static" />
<br />
<asp:Button ID="Button2" runat="server" Text="Get Lenth of Text" ClientIDMode="Static" />
<asp:Button ID="Button3" runat="server" Text="Change Text Box Value" ClientIDMode="Static" />


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