Use JQuery to implement smart form verification function _ jquery

The form verification function is often used in projects. Next we will introduce the example code of using jquery to implement the smart form verification function, if you are interested in jquery's form verification function, let's show you the form first. The specific results are as follows:

1. JQuery is used at the beginning of the foreground. The HTML Tag is displayed first:

2, followed by the CSS code:

3. before writing JQUery code, introduce the JQuery support file: