Client Side Scripting.pptx
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Client side validation is performed by a web browser to check form fields before submitting to a server. It can automatically validate required fields and data types using attributes like required. Server side validation then further checks the input on the server after it is submitted. Data validation ensures user input is complete, correct and useful by verifying fields are filled, dates are valid, and text isn't in numeric fields to help get accurate information from users.
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Client Side Scripting.pptx
- 1. Introduction To Client Side Scripting
- 6. Automatic HTML Form Validation HTML form validation can be performed automatically by the browser: If a form field (fname) is empty, the required attribute prevents this form from being submitted Server side validation is performed by a web server, after input has been sent to the server. Client side validation is performed by a web browser, before input is sent to a web server.
- 7. Data Validation Data validation is the process of ensuring that user input is clean, correct, and useful. Typical validation tasks are: has the user filled in all required fields? has the user entered a valid date? has the user entered text in a numeric field? 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.