JavaScript计算器工作不正常，不确定代码的哪部分不正确

我已经使用html和css创建了一个计算器，我选择的用于处理html元素的编程语言是JavaScript，但我的代码似乎都不起作用，我不确定哪里出了问题

所有的按钮都不起作用，我试图做的操作也不起作用，似乎我遗漏了什么

有人能帮我找出代码的问题吗？ 非常感谢你

    class Calculator {
    constructor(previousOperandTextElement, currentOperandTextElement) {
        this.previousOperandTextElement = previousOperandTextElement
        this.currentOperandTextElemement = 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.toLocalString('en', {
                maximumFractionDigits: 0
            })
        }
        if (decimalDigits != null) {
            return `${integerDisplay}.${decimalDigits}`
        } else {
            return integerDisplay
        }

    }

    updateDisplay() {
        this.currentOperandTextElemement.innerText =
            this.getDisplayNumber(this.currentOperand)
        if (this.operation != null) {
            this.previousOperandTextElement.innerText =
            `${this.getDisplayNumber(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 allClearButton = document.querySelector('[data-all-clear]')
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()
})

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

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

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假设您开始按12+3.2=-它在控制台中显示什么？完成这些操作后，用控制台的副本/粘贴更新问题。嘿@MadaManu，我成功了，我犯了一些简单的错误，比如，我写了“isNan”作为“isNan”的对立面，我在integerDisplay和integerDigits之间漏掉了一个“=”符号。为了定位，我还忘了在“Locale”中添加一个“e”，基本上是愚蠢的区分大小写的错误，谢谢你的帮助！！假设您开始按12+3.2=-它在控制台中显示什么？完成这些操作后，用控制台的副本/粘贴更新问题。嘿@MadaManu，我成功了，我犯了一些简单的错误，比如，我写了“isNan”作为“isNan”的对立面，我在integerDisplay和integerDigits之间漏掉了一个“=”符号。为了定位，我还忘了在“Locale”中添加一个“e”，基本上是愚蠢的区分大小写的错误，谢谢你的帮助！！