Javascript 对简单阶乘的“太多递归” function
[英]Javascript 'too much recursion' on a simple factorial function
问题描述
I went over more than a few 'too much recursion' questions and answers here but each of them solves a specific issue, yet I couldn't deduce a proper answer from them to answer this code error, how to solve it and why I'm getting that error:
我在这里讨论了很多“太多递归”的问题和答案，但每个问题和答案都解决了一个特定的问题，但我无法从他们那里推断出正确的答案来回答这个代码错误，如何解决它以及为什么我'我收到那个错误：
<body>
<input type="number" id="num">
<input type="button" id="submit" onclick="factor()"><br>
<div id="yourResult"></div>
<script>
inputValue = document.getElementById('num').val;
function factor(n){
if(n==0){
return 1;
}
if(n==1){
return 1;
}
return n * factor(n-1);
}
function result() {
$('yourResult').append('<p>your factorial of ' + inputValue + ' equals to: ' + factor()+'</p>');
}
</script>
</body>
3 个解决方案
解决方案1
5 已采纳 2016-07-29 06:11:25
You need to pass the parameter value. 您需要传递参数值。
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <body> <input type="number" id="num"> <input type="button" id="submit" value="Get Factorial" onclick="result()"><br> <div id="yourResult"></div> <script> function factor(n){ if(n==0){ return 1; } if(n==1){ return 1; } return n * factor(n-1); } function result() { inputValue = document.getElementById('num').value; $('#yourResult').append('<p>your factorial of ' + inputValue + ' equals to: ' + factor(inputValue)+'</p>'); } </script> </body>
解决方案2
1 2016-07-29 06:23:51
Hey @clusterBuddy make it correct document.getElementById('num').val to document.getElementById('num').value and try below code it will gives you the factorial result: 嘿@clusterBuddy使其document.getElementById('num').val正确为document.getElementById('num').value并尝试下面的代码，它将为您提供阶乘结果：
<script type="text/javascript">
function factor(){
var n=document.getElementById("num").value;
var factorial = function(n) {
if(n == 0) {
return 1
} else {
return n * factorial(n - 1);
}
}
document.getElementById("yourResult").innerHTML ="your factorial is"+factorial(n);
}
</script>
<body>
<input type="text" id="num">
<input type="button" id="submit" value="submit" onclick="factor()"><br>
<span id="yourResult"></span>
</body>
解决方案3
0 2022-06-21 20:56:22
This function can be easier:这个 function 可以更简单：
function factor(n) {return !!+n && (n <= 1 ? n : n * factor(--n))}
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.