利用vue 实现一个响应式导航

效果图：

实现起来很简单，下面主要代码

  page_width() {
      let screenWidth = window.screen.width;
      console.log(screenWidth);
      if (screenWidth < 800) {
        this.fullWidth = false;
      } else {
        this.fullWidth = true;
      }
    }

 mounted() {
    
    window.onresize = () => {
      this.page_width();
    };
    this.page_width();
  }

然后在html判断一下

<div v-if="fullWidth">pc导航</div>
 <transition name="toggle-cart">
 <div v-if="！fullWidth">移动导航导航</div>
 </template>

vue的动画样式

``
.toggle-cart-enter-active,
.toggle-cart-leave-active {
transition: all 0.4s ease-out;
}
.toggle-cart-enter,
.toggle-cart-leave-active {
transform: translateY(-100%);

完整代码（还可以修改优化一下）：