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

Javascript 相关文章推荐
Extjs ajax同步请求时post方式参数发送方式
Aug 05 Javascript
javascript字符串拼接的效率问题
Dec 25 Javascript
JS+CSS实现经典的左侧竖向滑动菜单效果
Sep 23 Javascript
AngularJS轻松实现双击排序的功能
Aug 30 Javascript
canvas仿iwatch时钟效果
Mar 06 Javascript
基于javaScript的this指向总结
Jul 22 Javascript
webpack dll打包重复问题优化的解决
Oct 10 Javascript
新手快速入门微信小程序组件库 iView Weapp
Jun 24 Javascript
Vue开发环境中修改端口号的实现方法
Aug 15 Javascript
jQuery实现简单日历效果
Jul 05 jQuery
微信小程序实现时间戳格式转换
Jul 20 Javascript
vue实现Toast组件轻提示
Apr 10 Vue.js
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
You might like
PHP根据session与cookie用户登录状态操作类的代码
2016/05/13 PHP
php实现表单提交上传文件功能
2018/05/28 PHP
jQuery中创建实例与原型继承揭秘
2011/12/21 Javascript
jquery 操作DOM案例代码分享
2012/04/05 Javascript
javascript数字格式化通用类 accounting.js使用
2012/08/24 Javascript
5秒后跳转效果(setInterval/SetTimeOut)
2013/05/03 Javascript
一个jquery实现的不错的多行文字图片滚动效果
2014/09/28 Javascript
node.js中的fs.close方法使用说明
2014/12/17 Javascript
js实现文字滚动效果
2016/03/03 Javascript
原生js实现网易轮播图效果
2020/04/10 Javascript
Vue.js实战之组件之间的数据传递
2017/04/01 Javascript
详解vue-router 2.0 常用基础知识点之导航钩子
2017/05/10 Javascript
jQuery获取单选按钮radio选中值与去除所有radio选中状态的方法
2017/05/20 jQuery
js中的事件委托或是事件代理使用详解
2017/06/23 Javascript
Angular 2 ngForm中的ngModel、[ngModel]和[(ngModel)]的写法
2017/06/29 Javascript
Vue.js实例方法之生命周期详解
2017/07/03 Javascript
vue-cli整合vuex的时候,修改actions和mutations,实现热部署的方法
2018/09/19 Javascript
jQuery+vue.js实现的多选下拉列表功能示例
2019/01/15 jQuery
JQuery 实现文件下载的常用方法分析
2019/10/29 jQuery
Vue filter 过滤当前时间 实现实时更新效果
2019/12/20 Javascript
python根据时间生成mongodb的ObjectId的方法
2015/03/13 Python
Python3计算三角形的面积代码
2017/12/18 Python
解决Python3 被PHP程序调用执行返回乱码的问题
2019/02/16 Python
django 自定义filter 判断if var in list的例子
2019/08/20 Python
Android Q之气泡弹窗的实现示例
2020/06/23 Python
Python字节单位转换(将字节转换为K M G T)
2021/03/02 Python
巴西最大的家具及装饰用品店:Mobly
2017/10/11 全球购物
中东奢侈品市场:Coveti
2019/05/12 全球购物
成功的餐厅经营创业计划书
2014/01/15 职场文书
国税会议欢迎词
2014/01/16 职场文书
办公室秘书自我鉴定
2014/01/18 职场文书
大学生社会实践自我鉴定
2014/03/24 职场文书
2014年小学重阳节活动策划方案
2014/09/16 职场文书
财会专业大学生求职信
2014/09/26 职场文书
2016年大学迎新工作总结
2015/10/14 职场文书
忆童年!用Python实现愤怒的小鸟游戏
2021/06/07 Python