菜鸟做项目时发现很多 vue3 常用的代码，所以来总结一下！

监听路由

import { useRoute } from "vue-router";
let router = useRoute();
let actroute = ref(null);
watch(() => router.path,(newValue, oldValue) => {console.log("watch", newValue, oldValue);actroute.value = newValue;},{ immediate: true }
);

vue3 警告Feature flag VUE_PROD_HYDRATION_MISMATCH_DETAILS is not explicitly defined.

vue.config.js 添加上该代码：

chainWebpack: (config) => {config.plugin("define").tap((definitions) => {Object.assign(definitions[0], {__VUE_OPTIONS_API__: "true",__VUE_PROD_DEVTOOLS__: "false",__VUE_PROD_HYDRATION_MISMATCH_DETAILS__: "false",});return definitions;});},

参考：Vue3.4+报Feature flag VUE_PROD_HYDRATION_MISMATCH_DETAILS is not explicitly defined… 处理