pageApageBpageCpageD{path:'pageA',name:'pageA',components:{basic:pageA,named:pageC}},{path:'pageB',name:'pageB',components:{basic:pageB,named:pageD}},{path:'pageC',name:'pageC',components:{basic:pageA,//這里或許是pageB，根據上一次點擊pageA或者pageB決定的named:pageC}},{path:'pageD',name:'pageD',components:{basic:pageA,//這里或許是pageB，根據上一次點擊pageA或者pageB決定的named:pageD}},意思就是：當我點擊pageA、pageB時，basic和named區域都會相應改變；但是當我點擊pageC獲取pageD時，basic區域保留上一次的內容不改變，named區域改變；這個怎么實現