Vue制作仿手机计算器

Vue制作仿手机计算器

1.首先是把样式做出来，按钮是0-9，还有加减乘除，百分号，清除按钮，小数点，等号、等等

2.把官方网站的JS插件引用，https://cn.vuejs.org/v2/guide/

页面视图

JS

 new Vue({
     
            el: "#app",
            data: {
     
                equation: '0',
                isDecimalAdded: false, //防止在一组数字中间输入超过一个小数位
                isOperatorAdded: false, //判断之否已点击 加、减、乘、除，防止连续点击超过一个运算符号
                isStarted: false, //判断计算器是否已经开始输入数字，用于正负数和百分比计算的时候作一些判断
            },
            methods: {
     
                //Check if the character is + - × ÷
                isOperator(character) {
      //用来判断character 是否加减乘除
                    return ['+', '-', '×', '÷'].indexOf(character) > -1
                },
                append(character) {
      //append(character)加减乘除
                    if (this.equation === '0' && !this.isOperator(character)) {
     
                        if (character === '.') {
     
                            this.equation += '' + character
                            this.isDecimalAdded = true
                        } else {
     
                            this.equation = '' + character
                        }
                        this.isStarted = true
                        return
                    }

                    if (!this.isOperator(character)) {
     
                        if (character === '.' && this.isDecimalAdded) {
     
                            return
                        }

                        if (character === '.') {
     
                            this.isDecimalAdded = true
                            this.isOperatorAdded = true
                        } else {
     
                            this.isOperatorAdded = false
                        }
                        this.equation += '' + character
                    }

                    if (this.isOperator(character) && !this.isOperatorAdded) {
     
                        this.equation += '' + character
                        this.isDecimalAdded = false
                        this.isOperatorAdded = true
                    }
                },
                calculate() {
      //等于号的时候
                    let result = this.equation.replace(new RegExp('×', 'g'), '*').replace(new RegExp('÷', 'g'), '/')
                    this.equation = parseFloat(eval(result).toFixed(9)).toString()
                    this.isDecimalAdded = false
                    this.isOperatorAdded = false
                },
                calculateToggle() {
      //点击正负号
                    if (this.isOperatorAdded || !this.isStarted) {
     
                        true
                    }

                    this.equation = this.equation + '* -1'
                    this.calculate()
                },
                calculatePercentage() {
      //点击百分比
                    if (this.isOperatorAdded || !this.isStarted) {
     
                        true
                    }

                    this.equation = this.equation + '* 0.01'
                    this.calculate()
                },
                clear() {
      //点击AC
                    this.equation = '0'
                    this.isDecimalAdded = false //防止在一组数字中间输入超过一个小数位
                    this.isOperatorAdded = false //判断之否已点击 加、减、乘、除，防止连续点击超过一个运算符号
                    this.isStarted = false //判断计算器是否已经开始输入数字，用于正负数和百分比计算的时候作一些判断
                }
            }
        })