大神看看我這代碼哪里出了問題？？？
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Math </title>
<script type="text/javascript">
var i=Math.random()*10;
document.getElementsByTagName("button")[0].onclick=function(){
? ? document.getElementsByTagName("button")[0].innerHTML=round(i)
}
</script>
</head>
<body>
<button>點擊</button>
</body>
</html>
為什么點擊沒有變化呢
2016-12-16
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Math </title>
<script type="text/javascript">
function func_click()
{
??? var i=Math.random()*10;
?
??? var myobj = document.getElementsByTagName("button")[0];
??? //var myobj = document.getElementById("button");
??? myobj.innerHTML = i;
??? document.write(myobj.innerHTML);
????
}
</script>
</head>
<body>
<button id="button" onclick="func_click()">點擊</button>
</body>
</html>
2016-12-16
If I were you I will split such function into sortable steps...
2016-12-16
button不是名字
<button id="xxxx" name="xxxx" class="xxxx">點擊</button>
document.getElementsByTagName("xxxx")[0].onclick=function(){