在我的主页上,我有下拉菜单,显示v-show=通过点击链接@click = "show=!当我改变路由时,我想设置show=false。请告诉我如何实现这件事。
当前回答
使用Vue3和合成API你可以做到
<script setup lang="ts">
import { watch } from "vue";
import { useRoute } from "vue-router";
const route = useRoute();
// do a `console.log(route)` to see route attributes (fullPath, hash, params, path...)
watch(
() => route.fullPath,
async () => {
console.log("route fullPath updated", route.fullPath);
}
);
</script>
参考资料和示例:https://router.vuejs.org/guide/advanced/composition-api.html#vue-router-and-the-composition-api
其他回答
typescript用户的另一个解决方案:
import Vue from "vue";
import Component from "vue-class-component";
@Component({
beforeRouteLeave(to, from, next) {
// incase if you want to access `this`
// const self = this as any;
next();
}
})
export default class ComponentName extends Vue {}
在组件的$route上设置一个监控器,如下所示:
watch:{
$route (to, from){
this.show = false;
}
}
它观察路由变化,当路由变化时,将show设置为false
如果您正在使用v2.2.0,那么还有一个可用的选项来检测$routes中的更改。
要对同一个组件中的参数变化做出反应,你可以观察$route对象:
const User = {
template: '...',
watch: {
'$route' (to, from) {
// react to route changes...
}
}
}
或者,使用2.2中引入的beforeRouteUpdate守卫:
const User = {
template: '...',
beforeRouteUpdate (to, from, next) {
// react to route changes...
// don't forget to call next()
}
}
参考:https://router.vuejs.org/en/essentials/dynamic-matching.html
使用Vue3和合成API你可以做到
<script setup lang="ts">
import { watch } from "vue";
import { useRoute } from "vue-router";
const route = useRoute();
// do a `console.log(route)` to see route attributes (fullPath, hash, params, path...)
watch(
() => route.fullPath,
async () => {
console.log("route fullPath updated", route.fullPath);
}
);
</script>
参考资料和示例:https://router.vuejs.org/guide/advanced/composition-api.html#vue-router-and-the-composition-api
你可以使用beforeEach事件,它允许任何函数在路由改变时发生,只是不要忘记调用next()函数来进行下一个操作,基本上它与后端expressJS中间件具有相同的工作。
router.beforeEach((to, from, next) => {
store.commit('setError', null); //in this example on each route I'm removing the error noted from the old route
document.title = `${to.meta.title} | HartWork`; //on each route I'm adding a prefix to document title.
next(); //calling next to proceed next functions and operations
})