<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>计算属性</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <script src="../js/Vue.js"></script>
    <script src="../js/vue-resource.js"></script>
    <script>
        window.onload = function(){
            var vm = new Vue({
                el:'#box',
                data: {
                    a: 1,
                },
                computed:{
                    b:function(){
                        return this.a+1;
                    }
                }
            });
            console.log(vm.a);
        }
    </script>
</head>
<body>
<div id="box">
    a => {{a}}
    <br>
    b => {{b}}
</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>计算属性</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <script src="../js/Vue.js"></script>
    <script src="../js/vue-resource.js"></script>
    <script>
        window.onload = function(){
            var vm = new Vue({
                el:'#box',
                data: {
                    a: 1,
                },
                computed:{
                    b:function(){
                        return this.a+1;
                    }
                }
            });
            document.onclick = function(){
                vm.a = 101;
            }
        }
    </script>
</head>
<body>
<div id="box">
    a => {{a}}
    <br>
    b => {{b}}
</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>计算属性</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <script src="../js/Vue.js"></script>
    <script src="../js/vue-resource.js"></script>
    <script>
        window.onload = function(){
            var vm = new Vue({
                el:'#box',
                data: {
                    a: 1,
                },
                computed:{
                    b:{
                        get:function(){
                            return this.a+2;
                        },
                        set:function(val){
                            this.a=val;
                        }
                    }
                }
            });
            document.onclick = function(){
                vm.b = 10;
            }
        }
    </script>
</head>
<body>
<div id="box">
    a => {{a}}
    <br>
    b => {{b}}
</div>
</body>
</html>
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