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我如何写一个表格来从用户那里获取一个数字，并在该数字的范围内掷骰子，其中变量“输入”是他们的数字。我没有足够的表单经验，所有表单教程都是内联的。

<html>
<head>
</head>
<body>
<script>
result = Math.floor(((Math.random())* input))+1;
document.write(result);
</script>
</body>
</html>
4

2 回答 2

1 
<html>
<head>
</head>
<body>

<form>
<input id="txtInput" type="TextBox" onkeyup="myFunc();" />
</form>

<script>
function myFunc(){
    var input = document.getElementById("txtInput").value;
    result = Math.floor(((Math.random())* input))+1;
    document.write(result);
}
</script>

</body>
</html>
于 2013-03-06T15:48:01.677 回答
0

To achieve your goal and avoid document.write() that would erase everything, you can create a empty div, and then write the result to it. With this code you can repeat the operation of calling the random function as much times as you want:

<html>
<head>
</head>
<body>

n: <input type="text" id="n" name="n" value="">
<input type="submit" value="submit" onclick="call_result();">

<div id="result"></div> 

<script type="text/javascript">
function call_result(){
    var input = parseInt(document.getElementById("n").value);
    var result = Math.floor((Math.random())*input)+1;
//  document.write(result);
    document.getElementById("result").innerHTML=result;
}
</script>

</body>
</html>
于 2013-03-06T16:11:15.747 回答