What is JavaScript ?
JavaScript is a programming language.which is used on the client-side for the validation of form data and values It make web pages more interactive. Javascript is often used to create polls and quizzes.
why we need JavaScript ?
JavaScript support is built into all the major web browsers,including Chrome,Firefox,Safari and Internet Explorer.provide the user of your site are using web browsers that support Javascript (most do ) and some have Javascript enabled by default.it saves the time on the client side for form validation.we dont need to wait for the server response for data validity.
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