letary=[{fileName:"文档1",nodeId:"1133275924701949952",},{fileName:"文档2",nodeId:"1133275743956807681",},{fileName:"文档3",nodeId:"1133275683449434112",},{fileName:"文档4",nodeId:"1133275743956807681",},{fileName:"文档5",nodeId:"1133275683449434112",},{fileName:"文档6",nodeId:"1133275924701949952",}]//将相同id的文件名以“,”拼接起来,放在数组中的一项得到=>["文档1,文档6","文档2,文档4","文档3,文档5"],怎么写啊大佬们
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