6212 СтицюкКЮ Лаб. 4 #420
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6212 СтицюкКЮ Лаб. 4 #420
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AvtoBBus
requested changes
Dec 17, 2025
lab4/calculator.html
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| <main class="calculator-main"> | ||
| <div class="calculator-card"> | ||
| <div class="input-group"> | ||
| <div class="input-wrapper"> | ||
| <label for="num1"><i class="fas fa-hashtag"></i> Первое число</label> | ||
| <input type="number" id="num1" placeholder="Введите число" step="any"> | ||
| </div> | ||
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| <div class="operation-wrapper"> | ||
| <label for="operation"><i class="fas fa-cogs"></i> Операция</label> |
Collaborator
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На примере этого блока про БЭМ
calculator-main
|
|__ calculator-main__calculator-card
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|__ calculator-card__input-group
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|__ input-group__input-wrapper
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|__ input-group__operation-wrapper
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|__ input-group__input-wrapper
lab4/calculator.js
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| const num1Input = document.getElementById('num1'); | ||
| const num2Input = document.getElementById('num2'); | ||
| const operationSelect = document.getElementById('operation'); | ||
| const calculateBtn = document.getElementById('calculate'); | ||
| const resetBtn = document.getElementById('reset'); | ||
| const resultDisplay = document.getElementById('result'); | ||
| const historyList = document.getElementById('history'); |
Collaborator
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А если какой-то элемент не был найден?
Author
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Не совсем понял вопрос. Можете, пожалуйста, поподробнее раскрыть?
Collaborator
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Если getElementById вернет null, то дальше при попытке обратиться к его полям приложение упадет
Collaborator
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Ладно принято, но такая сложная проверка элементов излишняя в данной лабе |
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Добавил файлы 4й лабораторной работы.