请查看下面的代码。我想将提示框中输入的值放入函数dis()中。我怎样才能做到这一点?
<!DOCTYPE html>
<html>
<head>
<script>
function display()
{
var z=prompt("enter your name...");
if(z!=null)
{
document.getElementById("demo").innerHTML="thankyou"+z+"..";
document.getElementById("case").style.display='block';
}
else
document.getElementById("demo").innerHTML="thankyou";
}
function dis()
{
var a=document.getElementById("aaa").value;
alert("your mark is"+a);
}
</script>
</head>
<body>
<p id="demo">click on the button.....</p>
<button type="button" onclick="display()">submit</button>
<div id="case" style="display:none">
<input type="text" id="aaa" name="myText" onDblClick="dis()">enter your mark
</div>
</body>
</html>