vue 开启和禁用button点击事件的2种方式

1.通过设置button样式来控制点击事件是否启用

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>通过给button设置样式来控制点击事件是否显示</title>
        <script src="js/jquery-2.1.0.js"></script>
        <script src="https://cdn.bootcss.com/vue/2.2.2/vue.min.js"></script>
    </head>
    <body>
        <div id="app">
            <button type="button" class="butt"  @click="tanchu">兑换</button>
        </div>
        <script>
            var vm = new Vue({
            el: '#app',
            data: {
                message: 3  
            },
            mounted() {
                    if(this.message>5){
                        $('.butt').html('已兑换').addClass('disbutt')
                    }else{
                        $('.butt').html('兑换').removeClass('disbutt')
                    }
                },
            methods: {
                tanchu: function() {
                    alert('兑换');
                }
            }
        });
    </script>
        <style type="text/css">
            .disbutt {
                pointer-events: none;
                cursor: not-allowed;
                box-shadow: none;
                opacity: .65;
                background: #e4e4e4;
                color: #0b0b0b;
                cursor: not-allowed;
            }

            button {
                width: 80px;
                height: 40px;
                background-color: #1B9DC7;
                color: #FFFFFF;
                text-align: center;
                line-height: 40px;
                cursor: pointer;
                border: 0;
                outline: none;
                border-radius: 10px;
            }
        </style>
    </body>

</html>

2.通过在绑定点击事件时多添加一个表示变量,根据变量的值来控制点击事件是否启用

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>通过变量来控制点击事件是否启用</title>
        <script src="js/jquery-2.1.0.js"></script>
        <script src="https://cdn.bootcss.com/vue/2.2.2/vue.min.js"></script>
    </head>
    <body>
        <div id="app">
            <button type="button" @click="buttonShow && lingqu()">领取</button>
        </div>
        <script>
            var vm = new Vue({
            el: '#app',
            data: {
                buttonShow :false
            },      
            methods: {
                lingqu: function() {
                    alert('领取');
                }
            }
        });
    </script>
    </body>
</html>