首頁(yè) 猿問(wèn) 想用遞歸實(shí)現(xiàn)一個(gè)階乘計(jì)算器，大神幫...

想用遞歸實(shí)現(xiàn)一個(gè)階乘計(jì)算器，大神幫忙看看問(wèn)題出在哪？

JavaScript

garnett555 2016-06-13 10:42:38

<!DOCTYPE?html> <html> <head> <meta?charset="utf-8"?/> <title>階乘計(jì)算器</title> </head> <body> <form> <input?type="text"?id='number1'?/> <button?type="submit"?onclick='factorial()'>Submit</button> <br?/> <input?type="text"?id='number2'?/> </form> <script?type="text/javascript"> function?factorial(){ var?num1=parseInt(document.getElementById('number1').value); var?num2=document.getElementById('number2').value; if?(num1<=1)?{ num2=1; } else{ num2=num1*arguments.callee(num1-1); } } </script> </body> </html>

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1 回答

已采納

qq___524

TA貢獻(xiàn)171條經(jīng)驗(yàn) 獲得超74個(gè)贊

<!DOCTYPE?html>
<html>
<head>
????<meta?charset="utf-8"?/>
????<title>階乘計(jì)算器</title>
?
</head>
<body>
<form?action="">
????<input?type="text"?id='number1'?/>
????<button?type="submit"?onclick='fun()'>Submit</button>
????<br?/>
????<input?type="text"?id='number2'?/>
</form>
????<script?type="text/javascript">
?????????
????????????
????????function?factorial(num1){
????????????var?num2;
????????????if?(num1<=1)?{
????????????????????num2=1;
????????????????}
????????????else{
????????????????????num2=num1*arguments.callee(num1-1);
????????????}
			return?num2;
????????}
		function?fun(){
			var?num1=parseInt(document.getElementById('number1').value);
			document.getElementById("number2").value=factorial(num1);
		}
????</script>
</body>
</html>

1 反對(duì) 回復(fù) 2016-06-13

garnett555
我試了下，功能可以實(shí)現(xiàn)~可是為什么點(diǎn)擊按鈕之后，結(jié)果就閃一下就沒(méi)有了呢。。。

回復(fù) 2016-06-13
qq___524
把from標(biāo)簽去掉就行了

回復(fù) 2016-06-13
garnett555
神奇。。。這是為什么。。。

回復(fù) 2016-06-13