Note : This post is first published on Sep-2014 in my previous blog Techkindle. Moving the content here.

Code Snippet for validating the textbox, dropdownlist, and radiobuttonlist in ASP.NET page using Jquery.

To check Textbox value:

txtName is the textbox id:

 if ($.trim($(“#txtName”).val()).length == 0) {
  //Enter a name
}

To check Whether entered value is number or not:

$.isNumeric(value) method can be used to check for number

 var age = $.trim($(“#txtAge”).val());
if ($.isNumeric(age)) {
   //Entered number is Numeric
}

To check whether any radio button is checked:

rdbGender is the Radiobuttonlist id:

 if ($(“#rdbGender input:checked”).length == 0) {
   //Gender is not selected
}

To check whether any dropdownlist value is checked:

ddlQualification is the Dropdownlist id:

 if ($(“#ddlQualification option:selected”).val() == 0) {
//Qualification is not selected
}

Full Source Code

Output Screen

Happy Learning 🙂