<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<title>Title</title>
<script src="js/vue-2.4.0.js"></script>
</head>
<body>
<div id="app">
<input type="text" v-model="n1">
<select v-model="opt">
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
<input type="text" v-model="n2">
<input type="button" value="=" @click="calc">
<input type="text" v-model="result">
</div>
<script>
const vm=new Vue({
el:‘#app‘,
data:{
n1:0,
n2:0,
opt:‘+‘,
result:0,
},
methods:{
calc(){ //计算器算数的方法
//逻辑
switch (this.opt){
case ‘+‘:
this.result=parseInt(this.n1)+parseInt(this.n2);
break;
case ‘-‘:
this.result=parseInt(this.n1)-parseInt(this.n2);
break;
case ‘*‘:
this.result=parseInt(this.n1)*parseInt(this.n2);
break;
case ‘/‘:
this.result=parseInt(this.n1)/parseInt(this.n2);
break;
}
}
}
})
</script>
</body>
</html>
