mutation.js代码：
changeRoute(state, val) {
let routeList =
state.routeList;
let isFind =
false;
let findeIdex =
0;
//菜单栏和下拉的二级菜单
if (val[
'type'] ==
'header' || val[
'type'] ==
'secondHeader') {
routeList.length =
0;
//顶级菜单清除缓存
localStorage.removeItem(
"routeList");
}
let routes =
routeList;
let localStorageList = localStorage.getItem(
'routeList');
if (localStorageList) {
//当前页刷新,使用缓存数据
routes = JSON.parse(localStorageList
as any);
}
//遍历是否有存入当前路由位置
for (let i =
0; i < routes.length; i++
) {
isFind = routes[i][
'name'] == val[
'name'];
if (isFind) {
findeIdex =
i;
break;
}
};
if (isFind) {
//有的话，清除当前路由以后的数据
routes.splice(findeIdex +
1, routes.length - findeIdex -
1);
//修改缓存
localStorage.setItem(
'routeList', JSON.stringify(routes));
} else {
//存入全局变量
routes.push(val);
//设置缓存
localStorage.setItem(
'routeList', JSON.stringify(routes));
}
}
页面使用：
//获取面包屑缓存
let localStorageList1 = localStorage.getItem(
'routeList'); //ts写法 as any
this.routeList = JSON.parse(localStorageList1
as any)
? JSON.parse(localStorageList1
as any)
: { name: 'test', url:
'/test' };
知识点：
1、localstorage
2、JSON.stringify()的作用是将 JavaScript 值转换为 JSON 字符串，JSON.parse()将JSON字符串转为一个对象
转载于:https://www.cnblogs.com/qiufang/p/11544538.html
相关资源：vue 使用localstorage实现面包屑的操作
