TA貢獻(xiàn)1036條經(jīng)驗(yàn) 獲得超461個(gè)贊
<!DOCTYPE?html>
<html>
<head>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
????<title>xxx</title>
????<script>
????????var?result?=1;
????????function?fact(num)?{
????????????if(num?<=?1)?{
????????????????return?1;
????????????}?else?{
????????????????return?num?*?fact(num?-?1);
????????????}
????????}
????????function?fact2(m){
????????????var?result?=?fact(m);
????????????document.write(result);
????????}
????</script>
</head>
<body>
<input?type="button"?onclick="fact2(5)"?value="aaaaa">
</body>
</html>你可以這樣試一下
TA貢獻(xiàn)2條經(jīng)驗(yàn) 獲得超0個(gè)贊
學(xué)習(xí)了，大受啟發(fā)，還可以簡(jiǎn)化成這樣
<!DOCTYPE?html>
<html>
<head>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
????<title>xxx</title>
????<script>
?????????function?fact(num)?{
????????????if(num?<=?1)?{
????????????????return?1;
????????????}?else?{
????????????????return?num?*?fact(num?-?1);
????????????}
????????}
????</script>
</head>
<body>
<input?type="button"?onclick="document.write(fact(5))"?value="aaaaa">
</body>
</html>省了一個(gè)函數(shù)和一個(gè)全程變量
TA貢獻(xiàn)2條經(jīng)驗(yàn) 獲得超0個(gè)贊
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>div標(biāo)簽</title>
<script type="text/javascript">
? ? function fact(m)
? ? {
? ? ? ? if (m<=1)
? ? ? ? {
? ? ? ? ? ? return(1);
? ? ? ? }
? ? ? ? else
? ? ? ? {
? ? ? ? ? ? return(m*fact(m-1));
? ? ? ? }
? ? ? ??
? ? }
</script>
</head>
<body>
? ? <script>
? ? ? ? document.write(fact(5));
? ? </script>
</body>
</html>
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