切换路由时的动画效果

在vue中使用动画时，包裹一个transition标签

app.vue：

<template>
    <div id="app">
        <transition :name="transitionName">
            <router-view/>
        </transition>
    </div>
</template>

其中transitionName是一个变量，由js控制可以改变其值

export default {
        name: 'app',
        data: function() {
            return {
                transitionName: ''
            }
        },
        watch:{
            '$route' (to, from) {
                const routeDeep = ['index', 'rules', 'dividequery','weekentry', 'prepareentry', 'answer', 'success'];
                const toDepth = routeDeep.indexOf(to.name);
                const fromDepth = routeDeep.indexOf(from.name);
                this.transitionName = toDepth > fromDepth ? 'view-in' : 'view-out';
            }
        }
    }

监控路由的变化，从而改变transitionName的值。最后只需要写样式就能有动画效果

    .view-in-enter-active,
    .view-in-leave-active, 
    .view-out-enter-active,
    .view-out-leave-active {
        will-change: transform;
        transition: all 500ms ease;
        height: 100%;
        top: 0;
        position: absolute;
        width: 100%;
        backface-visibility: hidden;
        perspective: 1000;
    }

  .view-out-enter {
    transform: translate3d(-100%, 0, 0);
  }

  .view-out-leave-active {
    transform: translate3d(100%, 0, 0);
  }

  .view-in-enter {
    transform: translate3d(100%, 0, 0);
  }

  .view-in-leave-active {
    transform: translate3d(-100%, 0, 0);
  }