如何用js控制onmousemove

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script>
function aa(){
var a = document.getElementById('tt');
a.onmousemove = 'alert(ss);';
// a.setAttribute('onmousemove',"alert('ss')");
}
</script>
</head><body onload="aa();">
<div style="color: #999999; " id="tt">
ddddddddddddddddddddddddddddddddddddd
</div>
</body>
</html>我想在js写出来onmousemove这样子，然后可不可以实现这个功能

解决方案 »

  1.   

    onmousemove是一个函数，你得定义一个function给它
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
    <title>无标题文档</title>
    <script>
        function aa(){
        var a = document.getElementById('tt');
        a.onmousemove = function(){alert('ss');};
    //    a.setAttribute('onmousemove',"alert('ss')");
        }
    </script>
    </head><body onload="aa();">
        <div style="color: #999999; " id="tt">
        ddddddddddddddddddddddddddddddddddddd
        </div>
    </body>
    </html>
      

  2.   

    <script>
        function aa(){
    var a = document.getElementById('tt');
    a.onmousemove = function(){alert("ss");};
        }
    </script>