esercizi js

2014-11-30 18:46:24 +01:00
parent b2e9b46742
commit c30036a3bc
11 changed files with 597 additions and 27 deletions
--- a/js_3.html
+++ b/js_3.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+<head lang="en">
+    <meta charset="UTF-8">
+    <title></title>
+</head>
+<body>
+
+<script>
+
+    function f (n) {
+        var base = n-1;
+        if (n > 1)
+            return n * base * f( n - 2);
+        else
+            return 1;
+    }
+
+    value = prompt("Inserire numero tra 1 e 15");
+
+    if ( value &&  !isNaN(value) && value>=1 && value<=15 )
+        document.writeln(f(value));
+    else
+        alert("Error");
+
+
+</script>
+
+
+</body>
+</html>