03_05.过渡动画

<!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>Document</title>
    <style>
        /* 隐藏动画样式 */
        .v-leave {
            opacity: 1;
        }
        .v-leave-to {
            opacity: 0;
        }
        .v-leave-active {
            transition: all 3s;
        }

        /* 显示动画样式 */
        .v-enter {
            font-size: 100px;
        }
        .v-enter-to {
            font-size: 4px;
        }
        .v-enter-active {
            transition: all 1s;
        }
    </style>
</head>
<body>
    <div id="app">
        <!-- 包起来的这个p标签, 如果隐藏, 那么vue会给它添加三个class: v-leave v-leave-to v-leave-active -->
        <!-- 包起来的这个p标签, 如果显示, 那么vue会给它添加三个class: v-enter v-enter-to v-enter-active -->
        <transition>
            <p v-if="isShow">鹅鹅鹅</p>
        </transition>
        <p v-if="isShow">去想象体格</p>
        <p v-if="isShow">白毛浮绿水</p>
        <p v-if="isShow">红掌拨青波</p>
        <button @click="change">显示隐藏</button>
    </div>

    <script src="vue.js"></script>
    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                isShow: true
            },
            methods: {
                change: function() {
                    this.isShow = !this.isShow;
                }
            }
        });
    </script>
</body>
</html>
03_05.过渡动画

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