Validating a dropdownlist in javascript

Most often, the purpose of data validation is to ensure correct user input.

Validation can be defined by many different methods, and deployed in many different ways.

You have to check both years are selected and to date must greater than the from date. In such situation you can use three select boxes to enter birthday. This is a simple validation script that checks if the user has correctly entered his/her birthday.

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Can a requiredfieldvalidator be used for a dropdown list, and how would you use it? I see someone else joined my question and he got his answers, my question in still there. I have a drop down list which is not visible at first. Add(new List Item("Miss Player", "MP")); ddl_season. Net Developer Vadodara - Gujarat Please remember to click “Mark as Answer” on the post that helps you. Add(new List Item("--Select one--", "")); ddl_season.

I have a requiredfieldvalidator for my dropdownlist. User choses some options(somewhere else) and according to that I fill the dropdown list and make it visible. Add(new List Item("John Player", "JP")); ddl_season. This can be beneficial to other community members reading the thread.

Client side validation is performed by a web browser, before input is sent to a web server.

From all the examples above we see how to validate the form data using Java Script.

I hope this article is useful for all students and beginners.

Before user submit the form, he needs to select one item from the listbox /dropdown. Suppose that you have created a form for course registration. In this case you have to validate form according to the user selected course type.

Following examples show you how to validate a Example : Suppose you have an application that user have to select from year and to year. Sometimes you may need to ask user's birthday for registering purposes. Please go through following example and get idea about how to validate dropdown box.

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