Validating checkbox in javascript assertive or accommodating

20-Jun-2018 13:26

Likewise, a Web Form may contain a set of options in the form of a Check Box List.Perhaps the user is required to check at least one of these options before continuing.To provide such validation, we have three choices: In this article we'll implement the third option, creating two custom server controls, Check Box Validator and Check Box List Validator. The server controls provided in this article were designed using Visual Studio 2005 and the . NET 1.x, check out Creating a Validation Control for Check Box Lists.The download at the end of this article includes both the entire source code and a compiled assembly that you can drop into your ASP. NET Framework 2.0's base class libraries; consequently, they will only work in ASP. Alternatively, you may adapt the code presented here to work in ASP. The server controls examined in this article were designed using Visual Studio 2005 and the . NET 1.x, check out Creating a Validation Control for Check Box Lists.That will warn the browsers that do not support that kind of script, or browsers that have javascript and vbscript disabled.In this document, we have discussed Java Script Form Validation using a sample registration form.For the sake of demonstration, we have taken five countries only. function form Validation() function userid_validation(uid,mx,my) function passid_validation(passid,mx,my) function all Letter(uname) function alphanumeric(uadd) function countryselect(ucountry) function allnumeric(uzip) function Validate Email(uemail) function validsex(umsex,ufsex) Flowchart : Download the Validation code from here.You can view this Sample Java Script Registration From Validation Example in a separate browser window and check how the validation is working.

There are also a variety for javascript libraries that are free to use.If you set a validation control's , stating: "Control 'control ID' referenced by the Control To Validate property of 'validation Control ID' cannot be validated." There may be times, however, when you need to provide validation for a Check Box or Check Box List.Many Web pages with Terms of Service include a Check Box titled "I agree to the above terms" that must be checked before continuing.These two tasks are handled in two separate methods.

Java Script and Vbscript are often used in a HTML page code to give more interactivity to the page, or just for one of the many applications of these scripts.

Inserting a vbscript code is done in the same way as the javascript code is done, only that you replace the 'text/javascript' with 'text/vbscript'.