this.$nextTick的作用
时间: 2023-10-18 14:26:36 浏览: 105
this.$nextTick方法的作用是在数据被修改后,使用回调函数来获取更新后的DOM并渲染出来。该方法是一个异步微任务,等待当前函数的DOM渲染结束后执行。它类似于一个高级的定时器,会自动追踪DOM的更新,并在更新完毕后触发回调函数。应用场景是在Vue响应式的特性下,当数据发生变化后,页面会自动更新,但是更新DOM的操作是异步的。因此,可以使用this.$nextTick方法来确保在下一次DOM更新完毕后执行回调函数,以获取更新后的DOM。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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