Math问题：怎么设置成，我点一次，就更新一次数，我现在弄得是只能点一次

源自：7-16 随机数 random()

Math问题：怎么设置成，我点一次，就更新一次数，我现在弄得是只能点一次

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Mathint </title>
<script type="text/javascript">
var i=Math.random()*10;
function abc(){
    document.write(Math.round(i));
    }
</script>
</head>
<body>
<input type="button" value="刷新" onclick="abc()">
</body>
</html>

提问者：doits 2016-03-10 22:00

个回答

Deevan

2016-03-10 23:12:15

需要用到location对象里的reload()方法。语法是：location.reload()
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>编程练习</title>
<script>
var mynum=Math.random();
Math.round(mynum*10);
document.write(Math.round(mynum*10));

function contxt()
{
location.reload();
}

</script>
</head>
<body>
<button type="button" onclick="contxt()">点击这里</button>
</body>
</html>

0
寒冰凌霜

2016-03-10 22:50:15

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Mathint </title>
<script type="text/javascript">

function abc(){
var i=Math.random()*10;
document.getElementById("abc").innerText=Math.round(i);
}
</script>
</head>
<body>
<input type="button" value="刷新" onclick="abc()">
<div id="abc"><div>
</body>
</html>

0