html5 拖动问题_html/css_WEB-ITnose

在网上看到说的资料说html5可以拖动。但我无论怎么弄都不行。高人指点
<script></script>
<script> <br /> function asd() <br /> { <br /> document.ondragover = function(e){ <br /> <br /> e.preventDefault(); <br /> <br /> }; <br /> <br /> document.ondrop = function(e){ <br /> <br /> e.preventDefault(); <br /> <br /> }; <br /> } <br /> </script>

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