首页
所有分类
TAGS
文字工具 EMOJI BIBLE
编程 Javascript

vue.js实现的经典计算器/科学计算器功能示例

Posted in Javascript onJuly 11, 2018

本文实例讲述了vue.js实现的经典计算器/科学计算器功能。分享给大家供大家参考，具体如下：

1. HTML部分：

<script src="https://cdn.bootcss.com/vue/2.5.16/vue.min.js"></script>
<div id="app">
 <div class="calculator">
  <button @click="changeModeEvent" class="toggle-button">
   <p v-if="changeMode">Show Advanced Mode   ⚈</p>
   <p v-else>Show Basic Mode   ⚆</p>
  </button>
  <div class="results">
   <input class="input" v-model="current" />
  </div>
  <div class="mode" v-if="changeMode">
   <button class="button" @click="press">7</button>
   <button class="button" @click="press">8</button>
   <button class="button" @click="press">9</button>
   <button class="button" @click="press">*</button>
   <button class="button" @click="press"><=</button>
   <button class="button" @click="press">C</button>
   <button class="button" @click="press">4</button>
   <button class="button" @click="press($event)">5</button>
   <button class="button" @click="press">6</button>
   <button class="button" @click="press">/</button>
   <button class="button" @click="press">(</button>
   <button class="button" @click="press">)</button>
   <button class="button" @click="press">1</button>
   <button class="button" @click="press">2</button>
   <button class="button" @click="press">3</button>
   <button class="button" @click="press">-</button>
   <button class="button" @click="press">x 2</button>
   <button class="button" @click="press">±</button>
   <button class="button" @click="press">0</button>
   <button class="button" @click="press">.</button>
   <button class="button" @click="press">%</button>
   <button class="button" @click="press">+</button>
   <button class="button equal-sign" @click="press">=</button> 
  </div>
  <div class="mode" v-else>
   <button class="button" @click="press">sin</button>
   <button class="button" @click="press">cos</button>
   <button class="button" @click="press">tan</button>
   <button class="button" @click="press">x^</button>
   <button class="button" @click="press"><=</button>
   <button class="button" @click="press">C</button>
   <button class="button" @click="press">log</button>
   <button class="button" @click="press">ln</button>
   <button class="button" @click="press">e</button>
   <button class="button" @click="press">°</button>
   <button class="button" @click="press">rad</button>
   <button class="button" @click="press">√</button>
   <button class="button" @click="press">7</button>
   <button class="button" @click="press">8  </button>
   <button class="button" @click="press">9</button>
   <button class="button" @click="press">/</button>
   <button class="button" @click="press">x 2</button>
   <button class="button" @click="press">x !</button>
   <button class="button" @click="press">4</button>
   <button class="button" @click="press">5</button>
   <button class="button" @click="press">6</button>
   <button class="button" @click="press">*</button>
   <button class="button" @click="press">(</button>
   <button class="button" @click="press">)</button>
   <button class="button" @click="press">1</button>
   <button class="button" @click="press">2</button>
   <button class="button" @click="press">3</button>
   <button class="button" @click="press">-</button>
   <button class="button" @click="press">%</button>
   <button class="button" @click="press">±</button>
   <button class="button" @click="press">0</button>
   <button class="button" @click="press">.</button>
   <button class="button" @click="press">π</button>
   <button class="button" @click="press">+</button>          
   <button class="button equal-sign" @click="press">=</button>
  </div>
 </div>
</div>

2. css部分：

body {
 background: linear-gradient(to right, #85D8CE, #085078);
}
#app {
 font-family: 'Avenir', Helvetica, Arial, sans-serif;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 text-align: center;
 color: #2c3e50;
 display: flex;
 flex-wrap: wrap;
 justify-content: center;
 align-item: center;
}
.calculator {
 width: 440px;
 padding: 20px;
 border-radius: 5px;
 margin: 20px auto;
 font-size: 16px;
 background-color: #333333;
}
.input {
 width: 420px;
 height: 50px;
 border-radius: 0px;
 border: 1px solid black;
 background-color: #333333;
 color: #d9d9d9;
 padding: 0 5px 0 5px;
 margin: 0 0px 10px 0px;
 font-size: 30px;
}
.input:focus,
.input:active {
 border-color: #03a9f4;
 box-shadow: 0 0 4px #03A9F4;
 outline: none 0;
}
.button {
 margin: 3px;
 width: 63px;
 border: 1px solid #0d0d0d;
 height: 30px;
 border-radius: 4px;
 color: #d9d9d9;
 background-color: #1a1a1a;
 cursor: pointer;
 outline: none;
}
.mode {
 display: flex;
 flex-wrap: wrap;
 justify-content: space-evenly;
}
.equal-sign {
 background-color: green;
 width: 133px;
}
.toggle-button {
 border: none;
 background-color: #333333;
 cursor: pointer;
 outline: none;
 font-size: 1rem;
 color: #fff;
 text-shadow: -1px -1px 0 rgba(0, 0, 0, 0.35);
}
p {
 margin-top: 0;
}
button::-moz-focus-inner {
 border-color: transparent;
}

3. js部分：

let app = new Vue({
 el: '#app',
 data () {
  return{ 
   current: '',
   changeMode: true
  }
 },
 methods: {
  press: function (event) {
   let me = this
   let key = event.target.textContent
   if (
    key != '=' && 
    key != 'C' &&
    key != '*' &&
    key != '/' &&
    key != '√' &&
    key != "x 2" &&
    key != "%" &&
    key != "<=" && 
    key != "±" && 
    key != "sin" && 
    key != "cos" && 
    key != "tan" && 
    key != "log" && 
    key != "ln" && 
    key != "x^" && 
    key != "x !" && 
    key != "π" && 
    key != "e" && 
    key != "rad" && 
    key != "°"
   ) {
    me.current += key
   } else if (key === '=') {
    if ((me.current).indexOf('^') > -1) {
     let base = (me.current).slice(0, (me.current).indexOf('^'))
     let exponent = (me.current).slice((me.current).indexOf('^') + 1)
     me.current = eval('Math.pow(' + base + ',' + exponent + ')')
    } else {
     me.current = eval(me.current)
    }
   } else if (key === 'C') {
    me.current = ''
   } else if (key === '*') {
    me.current += '*'
   } else if (key === '/') {
    me.current += '/'
   } else if (key === '+') {
    me.current += '+'
   } else if (key === '-') {
    me.current += '-'
   } else if (key === '±') {
    if ((me.current).charAt(0) === '-') {
     me.current = (me.current).slice(1)
    } else {
     me.current = '-' + me.current
    }
   } else if (key === '<=') {
    me.current = me.current.substring(0, me.current.length - 1)
   } else if (key === '%') {
    me.current = me.current / 100
   } else if (key === 'π') {
    me.current = me.current * Math.PI
   } else if (key === 'x 2') {
    me.current = eval(me.current * me.current)
   } else if (key === '√') {
    me.current = Math.sqrt(me.current)
   } else if (key === 'sin') {
    me.current = Math.sin(me.current)
   } else if (key === 'cos') {
    me.current = Math.cos(me.current)
   } else if (key === 'tan') {
    me.current = Math.tan(me.current)
   } else if (key === 'log') {
    me.current = Math.log10(me.current)
   } else if (key === 'ln') {
    me.current = Math.log(me.current)
   } else if (key === 'x^') {
    me.current += '^'
   } else if (key === 'x !') {
    let number = 1
    if (me.current === 0) {
     me.current = '1'
    } else if (me.current < 0) {
     me.current = NaN
    } else {
     let number = 1
     for (let i = me.current; i > 0; i--) {
      number *= i
     }
     me.current = number
    }
   } else if (key === 'e') {
    me.current = Math.exp(me.current)
   } else if (key === 'rad') {
    me.current = me.current * (Math.PI / 180)
   } else if (key === '°') {
    me.current = me.current * (180 / Math.PI)
   }
  },
  changeModeEvent: function() {
   let me = this
   me.changeMode = !me.changeMode
  }
 }
})

完整实例代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>3water.com vue.js计算器</title>
<style>
body {
 background: linear-gradient(to right, #85D8CE, #085078);
}
#app {
 font-family: 'Avenir', Helvetica, Arial, sans-serif;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 text-align: center;
 color: #2c3e50;
 display: flex;
 flex-wrap: wrap;
 justify-content: center;
 align-item: center;
}
.calculator {
 width: 440px;
 padding: 20px;
 border-radius: 5px;
 margin: 20px auto;
 font-size: 16px;
 background-color: #333333;
}
.input {
 width: 420px;
 height: 50px;
 border-radius: 0px;
 border: 1px solid black;
 background-color: #333333;
 color: #d9d9d9;
 padding: 0 5px 0 5px;
 margin: 0 0px 10px 0px;
 font-size: 30px;
}
.input:focus,
.input:active {
 border-color: #03a9f4;
 box-shadow: 0 0 4px #03A9F4;
 outline: none 0;
}
.button {
 margin: 3px;
 width: 63px;
 border: 1px solid #0d0d0d;
 height: 30px;
 border-radius: 4px;
 color: #d9d9d9;
 background-color: #1a1a1a;
 cursor: pointer;
 outline: none;
}
.mode {
 display: flex;
 flex-wrap: wrap;
 justify-content: space-evenly;
}
.equal-sign {
 background-color: green;
 width: 133px;
}
.toggle-button {
 border: none;
 background-color: #333333;
 cursor: pointer;
 outline: none;
 font-size: 1rem;
 color: #fff;
 text-shadow: -1px -1px 0 rgba(0, 0, 0, 0.35);
}
p {
 margin-top: 0;
}
button::-moz-focus-inner {
 border-color: transparent;
}
</style>
</head>
<body>
<script src="https://cdn.bootcss.com/vue/2.5.16/vue.min.js"></script>
<div id="app">
 <div class="calculator">
  <button @click="changeModeEvent" class="toggle-button">
   <p v-if="changeMode">Show Advanced Mode   ⚈</p>
   <p v-else>Show Basic Mode   ⚆</p>
  </button>
  <div class="results">
   <input class="input" v-model="current" />
  </div>
  <div class="mode" v-if="changeMode">
   <button class="button" @click="press">7</button>
   <button class="button" @click="press">8</button>
   <button class="button" @click="press">9</button>
   <button class="button" @click="press">*</button>
   <button class="button" @click="press"><=</button>
   <button class="button" @click="press">C</button>
   <button class="button" @click="press">4</button>
   <button class="button" @click="press($event)">5</button>
   <button class="button" @click="press">6</button>
   <button class="button" @click="press">/</button>
   <button class="button" @click="press">(</button>
   <button class="button" @click="press">)</button>
   <button class="button" @click="press">1</button>
   <button class="button" @click="press">2</button>
   <button class="button" @click="press">3</button>
   <button class="button" @click="press">-</button>
   <button class="button" @click="press">x 2</button>
   <button class="button" @click="press">±</button>
   <button class="button" @click="press">0</button>
   <button class="button" @click="press">.</button>
   <button class="button" @click="press">%</button>
   <button class="button" @click="press">+</button>
   <button class="button equal-sign" @click="press">=</button> 
  </div>
  <div class="mode" v-else>
   <button class="button" @click="press">sin</button>
   <button class="button" @click="press">cos</button>
   <button class="button" @click="press">tan</button>
   <button class="button" @click="press">x^</button>
   <button class="button" @click="press"><=</button>
   <button class="button" @click="press">C</button>
   <button class="button" @click="press">log</button>
   <button class="button" @click="press">ln</button>
   <button class="button" @click="press">e</button>
   <button class="button" @click="press">°</button>
   <button class="button" @click="press">rad</button>
   <button class="button" @click="press">√</button>
   <button class="button" @click="press">7</button>
   <button class="button" @click="press">8  </button>
   <button class="button" @click="press">9</button>
   <button class="button" @click="press">/</button>
   <button class="button" @click="press">x 2</button>
   <button class="button" @click="press">x !</button>
   <button class="button" @click="press">4</button>
   <button class="button" @click="press">5</button>
   <button class="button" @click="press">6</button>
   <button class="button" @click="press">*</button>
   <button class="button" @click="press">(</button>
   <button class="button" @click="press">)</button>
   <button class="button" @click="press">1</button>
   <button class="button" @click="press">2</button>
   <button class="button" @click="press">3</button>
   <button class="button" @click="press">-</button>
   <button class="button" @click="press">%</button>
   <button class="button" @click="press">±</button>
   <button class="button" @click="press">0</button>
   <button class="button" @click="press">.</button>
   <button class="button" @click="press">π</button>
   <button class="button" @click="press">+</button>          
   <button class="button equal-sign" @click="press">=</button>
  </div>
 </div>
</div>
<script>
let app = new Vue({
 el: '#app',
 data () {
  return{ 
   current: '',
   changeMode: true
  }
 },
 methods: {
  press: function (event) {
   let me = this
   let key = event.target.textContent
   if (
    key != '=' && 
    key != 'C' &&
    key != '*' &&
    key != '/' &&
    key != '√' &&
    key != "x 2" &&
    key != "%" &&
    key != "<=" && 
    key != "±" && 
    key != "sin" && 
    key != "cos" && 
    key != "tan" && 
    key != "log" && 
    key != "ln" && 
    key != "x^" && 
    key != "x !" && 
    key != "π" && 
    key != "e" && 
    key != "rad" && 
    key != "°"
   ) {
    me.current += key
   } else if (key === '=') {
    if ((me.current).indexOf('^') > -1) {
     let base = (me.current).slice(0, (me.current).indexOf('^'))
     let exponent = (me.current).slice((me.current).indexOf('^') + 1)
     me.current = eval('Math.pow(' + base + ',' + exponent + ')')
    } else {
     me.current = eval(me.current)
    }
   } else if (key === 'C') {
    me.current = ''
   } else if (key === '*') {
    me.current += '*'
   } else if (key === '/') {
    me.current += '/'
   } else if (key === '+') {
    me.current += '+'
   } else if (key === '-') {
    me.current += '-'
   } else if (key === '±') {
    if ((me.current).charAt(0) === '-') {
     me.current = (me.current).slice(1)
    } else {
     me.current = '-' + me.current
    }
   } else if (key === '<=') {
    me.current = me.current.substring(0, me.current.length - 1)
   } else if (key === '%') {
    me.current = me.current / 100
   } else if (key === 'π') {
    me.current = me.current * Math.PI
   } else if (key === 'x 2') {
    me.current = eval(me.current * me.current)
   } else if (key === '√') {
    me.current = Math.sqrt(me.current)
   } else if (key === 'sin') {
    me.current = Math.sin(me.current)
   } else if (key === 'cos') {
    me.current = Math.cos(me.current)
   } else if (key === 'tan') {
    me.current = Math.tan(me.current)
   } else if (key === 'log') {
    me.current = Math.log10(me.current)
   } else if (key === 'ln') {
    me.current = Math.log(me.current)
   } else if (key === 'x^') {
    me.current += '^'
   } else if (key === 'x !') {
    let number = 1
    if (me.current === 0) {
     me.current = '1'
    } else if (me.current < 0) {
     me.current = NaN
    } else {
     let number = 1
     for (let i = me.current; i > 0; i--) {
      number *= i
     }
     me.current = number
    }
   } else if (key === 'e') {
    me.current = Math.exp(me.current)
   } else if (key === 'rad') {
    me.current = me.current * (Math.PI / 180)
   } else if (key === '°') {
    me.current = me.current * (180 / Math.PI)
   }
  },
  changeModeEvent: function() {
   let me = this
   me.changeMode = !me.changeMode
  }
 }
})
</script>
</body>
</html>

使用本站HTML/CSS/JS在线运行测试工具：http://tools.3water.com/code/HtmlJsRun，可得到如下测试运行效果：

vue.js实现的经典计算器/科学计算器功能示例

vue.js实现的经典计算器/科学计算器功能示例

- Author -

jq22

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

Javascript 相关文章推荐
再论Javascript下字符串连接的性能
Mar 05 Javascript
formStorage 基于jquery的一个插件(存储表单中元素的状态到本地)
Jan 20 Javascript
javascript拖拽应用实例
Mar 25 Javascript
Vue.js 和 MVVM 的注意事项
Nov 07 Javascript
JavaScript实现简单的四则运算计算器完整实例
Apr 28 Javascript
详解webpack和webpack-simple中如何引入css文件
Jun 28 Javascript
JS通过调用微信API实现微信支付功能的方法示例
Jun 29 Javascript
Angular 2父子组件数据传递之@ViewChild获取子组件详解
Jul 04 Javascript
微信小程序中使用ECharts 异步加载数据实现图表功能
Jul 13 Javascript
微信小程序动态生成二维码的实现代码
Jul 25 Javascript
微信小程序中使用Async-await方法异步请求变为同步请求方法
Mar 28 Javascript
javascript实现电商放大镜效果
Nov 23 Javascript
Vue.js实现的计算器功能完整示例
Jul 11 #Javascript
JavaScript类的继承方法小结【组合继承分析】
Jul 11 #Javascript
React中嵌套组件与被嵌套组件的通信过程
Jul 11 #Javascript
JSON数据中存在单个转义字符“\”的处理方法
Jul 11 #Javascript
JS实现动态生成html table表格的方法分析
Jul 11 #Javascript
vue监听键盘事件的快捷方法【推荐】
Jul 11 #Javascript
vue移动端实现红包雨效果
Jun 23 #Javascript
游标(1) 绝对定位(1) 表变量(1) postcss-px2rem(1) ip连接(1) mixin(1) ref(1) props(1) ECharts(3) GTID(1)
You might like
抓取YAHOO股票报价的类
2009/05/15 PHP
使用php来实现网络服务
2009/09/15 PHP
10个实用的PHP正则表达式汇总
2014/10/23 PHP
javascript引用对象的方法代码
2007/08/13 Javascript
Jquery解析json数据详解
2013/12/26 Javascript
jquery查找tr td 示例模拟
2014/05/08 Javascript
JavaScript中使用stopPropagation函数停止事件传播例子
2014/08/27 Javascript
jquery禁止回车触发表单提交
2014/12/12 Javascript
JQuery的ON()方法支持的所有事件罗列
2015/02/28 Javascript
无法获取隐藏元素宽度和高度的解决方案
2017/03/07 Javascript
Vue通过input筛选数据
2020/10/26 Javascript
JavaScript Drum Kit 指南(纯 JS 模拟敲鼓效果)
2017/07/23 Javascript
Easyui和zTree两种方式分别实现树形下拉框
2017/08/04 Javascript
angular4强制刷新视图的方法
2018/10/09 Javascript
一文了解vue-router之hash模式和history模式
2019/05/31 Javascript
详解为element-ui的Select和Cascader添加弹层底部操作按钮
2020/02/07 Javascript
Python编码类型转换方法详解
2016/07/01 Python
Python socket模块实现的udp通信功能示例
2019/04/10 Python
python爬虫selenium和phantomJs使用方法解析
2019/08/08 Python
使用pytorch和torchtext进行文本分类的实例
2020/01/08 Python
Python中os模块功能与用法详解
2020/02/26 Python
银行会计财务工作个人的自我评价
2013/10/29 职场文书
秋季运动会加油稿200字
2014/01/11 职场文书
单位人事专员介绍信
2014/01/11 职场文书
学生爱国演讲稿
2014/01/14 职场文书
早会主持词
2014/03/17 职场文书
道路运输企业安全生产责任书
2014/07/28 职场文书
2014医学院领导班子对照检查材料思想汇报
2014/09/19 职场文书
2014年初中班主任工作总结
2014/11/08 职场文书
拾金不昧表扬稿
2015/01/16 职场文书
销售会议开幕词
2015/01/28 职场文书
岳庙导游词
2015/02/04 职场文书
财务工作个人总结
2015/02/27 职场文书
2015年市场部工作总结
2015/04/30 职场文书
2016优秀护士先进个人事迹材料
2016/02/25 职场文书
一次MySQL启动导致的事故实战记录
2021/09/15 MySQL