How do you validate the Forms in javaScript using events

One of the best uses of client-side JavaScript is the form validations. The input given by the user can be validated either on the client-side or on the server-sides. By performing validations on the client-sides using JavaScript, the advantages are less load on the servers, saving network bandwidths and quicker response for the users. Form input can be validated using different event, but the most common event used is submitted i.e when the submit buttons are clicked. The corresponding attribute to be used is onsubmit of the form tags. Let’s consider a simple form as shown below code: 1 2

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How do you validate the Forms in javaScript using events
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