Created
May 30, 2025 15:43
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callbacksDZ
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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>Document</title> | |
| </head> | |
| <body> | |
| <script> | |
| // Задание 1: | |
| function calculate(a, b, onSuccess, onError) | |
| { | |
| if (b === 0) | |
| { | |
| onError("Деление на ноль запрещено"); | |
| } | |
| else | |
| { | |
| const result = a / b; | |
| onSuccess(result); | |
| } | |
| } | |
| function onSuccess(result) | |
| { | |
| console.log("Результат:", result); | |
| } | |
| function onError(error) { | |
| console.error("Ошибка:", error); | |
| } | |
| calculate(10, 2, onSuccess, onError); // 5 | |
| calculate(10, 0, onSuccess, onError); // Ошибка: Деление на ноль запрещено | |
| // ========================================================================================== | |
| // Задание 2 | |
| let array = [1, 2, 3, 4, 5]; | |
| function processArray(array, callback) | |
| { | |
| return array.map(callback); | |
| } | |
| function logElement(element) | |
| { | |
| console.log(element); | |
| return element; // чтобы map вернул исходные значения | |
| } | |
| function squareElement(element) | |
| { | |
| return element * element; | |
| } | |
| // Примеры использования: | |
| processArray(array, logElement); // 1 2 3 4 5 | |
| console.log(processArray(array, squareElement)); // [1, 4, 9, 16, 25] | |
| </script> | |
| </body> | |
| </html> |
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