Create a breadcrumb navigation bar through elementUI in vue2.0
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()
});2. Use watch or beforeRouteEnter in the component to be used
<template>
<p class="level-bread">
<el-breadcrumb separator="/">
<el-breadcrumb-item v-for="item in realList" :to="item.path">{{item.name}}</el-breadcrumb-item>
</el-breadcrumb>
</p>
</template>
<script>
export default {
name: "lelve-bread",
created(){
this.getRoutePath();
},
data() {
return {
realList: []
}
},
methods:{
getRoutePath() {
this.realList = this.$route.meta.routeList;
}
},
beforeRouteEnter(to,from, next) {
next((vm) => {
vm.realList = to.meta.routeList;
});
},
// watch:{
// $route:function(newV,oldV) {
// this.realList =newV.meta.routeList;
// }
// }
}
</script>.
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`
}
}The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
Related articles:
Through vue v-for implements the method of loading local static images (detailed tutorial)
How to solve the problem of red and warning when using v-for in vue (detailed tutorial)
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