Is inline validation convenient on pre filled form fields?

1. What is inline form validation?
2. How to do inline validation in JavaScript?
3. What does inline form mean?

What is inline form validation?

In short, inline validation is an effort on behalf of the form to help users correct information as they go, ideally so that when the point comes to submit the form, they are more likely to submit it on the first attempt. The more failed attempts a user makes to submit the form, the more likely they are to give up.

How to do inline validation in JavaScript?

In order to validate the input, we have to test it against a set of rules that define a pass or fail. For example, you don't want your users to enter & or @ or % into your name field because these characters don't belong there. In order to create a set of rules we use a Regular Expression (Regex).

What does inline form mean?

In an inline form, all of the elements are inline, left-aligned, and the labels are alongside. Note: This only applies to forms within viewports that are at least 768px wide! Additional rule for an inline form: Add class .form-inline to the <form> element.