<div id="box" data-name='ghostwu' data-age='22' , data-sex='man'>ghostwu tell you how to learn html5</div>
    <script>
        var oBox = document.querySelector("#box");
        console.log( oBox.dataset ) ;
        var myName = oBox.dataset.name;
        var myAge = oBox.dataset.age;
        var mySex = oBox.dataset.sex;
        if( oBox.dataset.name ) {
            console.log( oBox.dataset.name );
        }
    </script>