Validating a textbox in javascript


03-Dec-2014 09:32

Validation is testing to determine whether the user entered into the field.Validating, in this case, does not mean that if John Doe types his name into the form field of a text box as Fred Doe the computer sends an alert to inform you that the data is untruthful.No, we still do not have the capability to find out whether a statement is true.Validation server controls are a series of controls that help you validate the data that the user enters into the other controls that are provided with ASP. They determine whether the form can be processed based upon the rules that you define in the validation server controls.One of the most common elements of Web pages is a form in which the user can input data that is posted back to the server.

validating a textbox in javascript-26

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This paper introduces these new controls and discusses tips and tricks on working with them in practical scenarios.

(34 printed pages) Introduction Looking at Validation The Required Field Validator Control The Compare Validator Control The Range Validator Control The Regular Expression Validator Control The Custom Validator Control The Validation Summary Control Conclusion In your studies of ASP.



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