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我已經在搜索我的問題,但解決方案無法幫助我。Uncaught TypeError:無法在第34行設置屬性'innerHTML'爲null
下面的代碼:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Der Einmaleins - Trainer</title>
<link href = "style.css" type = "text/css" rel = "stylesheet">
</head>
<body>
<h1>Der Einmaleins - Trainer</h1>
<button type="button" onclick = "start();">Start</button>
<button type = "button" onclick = "fertig();">Fertig!</button>
<input id = "erginput" type = "number" >
<br>
<label id = "rn1"></label>
<label id = "multiplication"><label>
<label id = "rn2"></label>
<script>
function start()
{
//var anzahl = 0
//while (anzahl < 20){
var randomnumber1 = getrn();
var randomnumber2 = getrn();
document.getElementById("rn1").innerHTML = randomnumber1;
document.getElementById("multiplication").innerHTML = "x";
document.getElementById("rn2").innerHTML = randomnumber2;
//}
}
function getrn(){
var min = 3;
var max = 10;
var randomnumber = Math.floor(Math.random() * (max - min)) + min;
return randomnumber;
}</script>
</body>
我認爲空是因爲,我看到了在其他代碼的錯誤randomnumber2奧德RN2沒有定義,但在這裏,他們都定義,不是嗎?
在此先感謝!
Ji W
您的乘法標籤沒有關閉與 ..你錯過了 '/'。 – 100rabh