html5 validation for symfony 2.1

Question

Is it true that only html5 can directly use client-side verification?
What I mean is, if I don’t use the html5 validation control and I don’t use html5, am I unable to perform client-side validation?

Answer 1

HTML5 control verification requires a browser that supports the HTML5 standard.

UPDATE:

Of course not. If you need custom form js verification, you can find a ready-made bundle, such as:

https://github.com/Abhoryo/APYJsFormV...

Or you can modify the form theme to add the js and css you need.

Answer 2

This depends on whether the html tag you use for front-end verification needs to be supported by html5, such as this

<input type="text" name="usrname" required="required" />

As mentioned above, you can use js to implement this function instead