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基于vue.js的计算器

特效介绍
js计算器

这是一款非常好看的基于vue.js的计算器,支持普通计算器和科学计算器,点击计算器上面的Show Advanced Mode和Show Basic Mode即可进行切换。经过改造可以放在自己的网站上。
因为比较简单,所以就不提供下载地址了,您可以按照下面的方法一步一步实现。

使用方法
1、加入css
<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>
注意:不要和自己的css重复了

2、引入vue.js
<script src="http://www.5imoban.net/download/vue/vue-2.5.16.min.js"></script>
3、在需要使用该计算器的地方加入html
<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>
4、初始化js
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
    }
  }
})