Validating fields javascript

21-Jun-2017 08:25

Clicking on the label will move the mouse cursor to the input with the id specified in the for attribute.The name of each input (or textarea) will be passed to the server to identify the contents of the form.Finally, notice that instead of using "text" as the input type for the email and url fields, we use "email" and "url".This will buy us free validation from browsers that support HTML5 even if Java Script is turned off.To get started, we'll create an HTML page that include a form with the id "contact". It should contain an label, an input (or textarea), and a span that will contain the error message.The form in HTML will look like this: tag improves usability.

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If any fields are not valid, the form will not be submitted and the user will be informed with error messages for the fields that are causing problems.In client side validation the data is validated in the browser using Java Script before submitting the data to the server.For example, suppose your user submits the form without entering a mandatory field.For example, suppose you wanted to validate a credit card.