JSFiddle - React, Tailwind, and code Playground

by Federico Garcia

HTML

<input class="dateValue" name="" id="" />
<input type="submit" value="Submit" />

JavaScript

$(function() {
        $('input.dateValue').bind('focusout', function(e) {
        
        if(! this.value.match(/\d{4}$/) ) {
            console.log('aa');
            e.preventDefault();
            //.attr('value','');
            $(this).focus().val('');
        }
        });
    });