Benefits of validating data using javascript

Posted by / 05-Sep-2020 14:41

Benefits of validating data using javascript

For example: Data type validation is customarily carried out on one or more simple data fields.

The simplest kind of data type validation verifies that the individual characters provided through user input are consistent with the expected characters of one or more known primitive data types; as defined in a programming language or data storage and retrieval mechanism as well as the specification of the following primitive data types: 1) integer; 2) float (decimal); or 3) string.

For example, a US phone number should have 10 digits and no letters or special characters.

A text field such as a personal name might disallow characters such a markup-based security attack.The Post-validation action sends feedback to help enforce validation.Simple range and constraint validation may examine user input for consistency with a minimum/maximum range, or consistency with a test for evaluating a sequence of characters, such as one or more tests against regular expressions.A Validation rule is a criterion or constraint used in the process of data validation, carried out after the data has been encoded onto an input medium and involves a data vet or validation program.This is distinct from formal verification, where the operation of a program is determined to be that which was intended, and that meets the purpose.

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