我不知道为什么我的计算器坏了，我也不知道是什么 错了。我甚至试图在stackoverflow上找到答案，但没有找到任何东西。我认为JavaScript代码可能存在一些问题。JavaScript中也有一些错误，但我找不到是什么。我认为这可能是IntegerDisplay部分。你能帮忙吗？我把我的代码放在下面。我会很棒 感谢您的任何帮助或建议，beacuse我不知道问题出在哪里。

顺晟科技：

按钮没有任何要更改和更新的事件事件侦听器/action method

请检查原始资料来源。

或为每个控件(*,-,del...）事件添加。

例如编号为

class Calculator {
    constructor(previousOperandTextElement, currentOperandTextElement) {
        this.previousOperandTextElement = previousOperandTextElement
        this.currentOperandTextElement = currentOperandTextElement
        this.clear()
    }

    clear() {
        this.currentOperand = ''
        this.previousOperand = ''
        this.operation = undefined
    }

    delete() {
        this.currentOperand = this.currentOperand.toString().slice(0, -1)
    }

    appendNumber(number) {
        if (number === '.' && this.currentOperand.includes('.')) return
        this.currentOperand = this.currentOperand.toString() + number.toString()     
    }

    chooseOperation(operation) {
        if (this.currentOperand === '') return
        if (this.previousOperand !== '') {
            this.compute()
        }
        this.operation = operation
        this.previousOperand = this.currentOperand
        this.currentOperand = ''
    }

    compute() {
        let computation 
        const prev = parseFloat(this.previousOperand)
        const current = parseFloat(this.currentOperand)
        if (isNaN(prev)  || isNaN(current)) return
        switch (this.operation) {
            case '+':
                computation = prev + current
                break
            case '-':
                computation = prev - current
                break
            case '*':
                computation = prev * current
                break
            case '÷':
                computation = prev / current
                break
            default:
                return
        }
        this.currentOperand = computation 
        this.operation = undefined
        this.previousOperand = ''
    }

    getDisplayNumber(number) {
        const stringNumber = number.toString()
        const integerDigits = parseFloat(stringNumber.split('.')[0])
        const decimalDigits = stringNumber.split('.'[1])
        let integerDisplay
        if (isNaN(integerDigits)) {
            integerDisplay = ''
        } else {
            integerDisplay integerDigits.toLocaleString('en', {
            maximumFractionDigits: 0 })
        }
        if (decimalDigits != null) {
            return `${integerDigits}.${decimalDigits}`
        } else {
          return integerDisplay
        }
    }

    updateDisplay() {
        this.currentOperandTextElement.innerText = 
            this.getDisplayNumber(this.currentOperand)
        if (this.operation != null) {
            this.previousOperandTextElement.innerText = 
                `${this.previousOperand} ${this.operation}`
        } else {
            this.previousOperandTextElement.innerText = '' 
        }
    }
}


const numberButtons = document.querySelectorAll('[data-number]')
const operationButtons = document.querySelectorAll('[data-operation]')
const equalsButton = document.querySelector('[data-equals]')
const deleteButton = document.querySelector('[data-delete]')
const clearAllButton = document.querySelector('[data-clear-all]')
const previousOperandTextElement = document.querySelector('[data-previous-operand]')
const currentOperandTextElement = document.querySelector('[data-current-operand]')

const calculator = new Calculator(previousOperandTextElement, currentOperandTextElement)

numberButtons.forEach(button => {
    button.addEventListener('click', () => {
        calculator.appendNumber(button.innerText)
        calculator.updateDisplay()
    })
})

operationButtons.forEach(button => {
    button.addEventListener('click', () => {
        calculator.chooseOperation(button.innerText)
        calculator.updateDisplay()
    })
})

equalsButton.addEventListener('click', button => {
    calculator.compute()
    calculator.updateDisplay()
})

clearAllButton.addEventListener('click', button => {
    calculator.clear()
    calculator.updateDisplay()
})

deleteButton.addEventListener('click', button => {
    calculator.delete()
    calculator.updateDisplay()
})