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DMD3475/week-5/recursion.html
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Recursion</title> | |
| </head> | |
| <body> | |
| <script> | |
| var isEven = function(num) { | |
| num = Math.abs(num); | |
| if (num === 0) | |
| return true; | |
| else if (num === 1) | |
| return false; | |
| else | |
| return isEven(num - 2); | |
| }; | |
| console.log(isEven(50)); | |
| // → true | |
| console.log(isEven(75)); | |
| // → false | |
| console.log(isEven(-1)); | |
| // → ?? | |
| </script> | |
| </body> | |
| </html> |