1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 <script type="text/javascript"> 7 //水仙花數 8 for (var num = 100; num <= 999; num++) { 9 10 var str = num.toString(); 11 var res1 =Number(str.slice(0,1)) //百位 或者用charAt(0) 12 var res2 =Number(str.slice(1,2)) //十位 或者用charAt(1) 13 var res3 =Number(str.slice(2,3)) //個位 或者用charAt(2) 14 15 var sumcube = Math.pow(res1,3)+Math.pow(res2,3)+Math.pow(res3,3); //立方和 16 num = res1*100+res2*10+res3; //這個數 17 if(sumcube == num){ 18 console.log(num); 19 } 20 } 21 </script> 22 </head> 23 <body> 24 25 </body> 26 </html>