<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>计算器</title>
<script src="../lib/js/vue.js"></script>
</head>
<body>
<div id="app">
<input type="text" v-model="num1">
<select v-model="opt">
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type="text" v-model="num2">
<input type="button" value="=" @click="count">
<input type="text" v-model="result">
</div>
<script>
const vm = new Vue({
el:'#app',
data:{
num1:0,
num2:0,
result:0,
opt:'-'
},
methods:{
count(){
// alert('11')
switch (this.opt) {
case "+":
this.result = parseInt(this.num1) + parseInt(this.num2);
break;
case "-":
this.result = parseInt(this.num1) - parseInt(this.num2);
break;
case "*":
this.result = parseInt(this.num1)* parseInt(this.num2);
break;
case "/":
this.result = parseInt(this.num1) / parseInt(this.num2);
break;
}
}
}
})
</script>
</body>
</html>