从一组文件名中保留某些同名且带后缀的文件

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// 剔除与后缀_signature同名的文件var arr = [    "/repository/temp/upload/idCard-0.jpg",    "/repository/temp/upload/idCard-1.jpg",    "/repository/temp/upload/idCard_IDcheck.jpg",    "/repository/temp/upload/222.pdf",    "/repository/temp/upload/Customer Declaration for VTM A.pdf",    "/repository/temp/upload/Customer Declaration for VTM.pdf",    "/repository/temp/upload/Customer Declaration for VTM_signature.pdf",    "/repository/temp/upload/HFE.pdf",    "/repository/temp/upload/HFESupplementInformation.pdf",    "/repository/temp/upload/HFESupplementInformation_signature.pdf",    "/repository/temp/upload/HFE_signature.pdf"];var arr2 = [], arr3 = [], arr4=[];arr2 = arr.filter(function(item){    return item.lastIndexOf('_signature.pdf') != -1;});console.log(arr);console.log(arr2);arr3 = arr2.map(function(item){    return item.split('_signature.pdf')[0]+'.pdf';});console.log(arr3);arr4 = arr.filter(function(item){    return arr3.indexOf(item) == -1;});console.log(arr4);

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