Create a breadcrumb navigation bar through elementUI in vue2.0-JS Tutorial-php.cn

This article mainly explains the process of making a breadcrumb navigation bar with vue2.0 elementUI in detail. Friends who are interested in this can learn it.

Main.js

var routeList = []; router.beforeEach((to, from, next) => { var index = -1; for(var i = 0; i < routeList.length; i++) { if(routeList[i].name == to.name) { index = i; break; } } if (index !== -1) { //如果存在路由列表，则把之后的路由都删掉 routeList.splice(index + 1, routeList.length - index - 1); } else if(to.name != '登录'){ routeList.push({"name":to.name,"path":to.fullPath}); } to.meta.routeList = routeList; next() });

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2. Use watch or beforeRouteEnter in the component to be used

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It should be noted that beforeRouteEnter cannot access this at this time.

const Foo = { template: `...`, beforeRouteEnter (to, from, next) { // 在渲染该组件的对应路由被 confirm 前调用 // 不！能！获取组件实例 `this` // 因为当守卫执行前，组件实例还没被创建 }, beforeRouteUpdate (to, from, next) { // 在当前路由改变，但是该组件被复用时调用 // 举例来说，对于一个带有动态参数的路径 /foo/:id，在 /foo/1 和 /foo/2 之间跳转的时候， // 由于会渲染同样的 Foo 组件，因此组件实例会被复用。而这个钩子就会在这个情况下被调用。 // 可以访问组件实例 `this` }, beforeRouteLeave (to, from, next) { // 导航离开该组件的对应路由时调用 // 可以访问组件实例 `this` } }

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The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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