一個數組對象去重
1 var songs = [ 2 {name:"羽根",artist:"air"}, 3 {name:"羽根",artist:"air"}, 4 {name:"晴天",artist:"周傑倫"}, 5 {name:"晴天",artist:"周傑倫"}, 6 {artist:"周傑倫",name:"晴天"} 7 ]; 8 9 function unique(songs){ 10 let result = {}; 11 let finalResult=[]; 12 for(let i=0;i<songs.length;i++){ 13 result[songs[i].name]=songs[i];//因為songs[i].name不能重復,達到去重效果,且這里必須知曉"name"或是其他鍵名 14 } 15 //console.log(result);{"羽根":{name:"羽根",artist:"air"},"晴天":{name:"晴天",artist:"周傑倫"}} //現在result內部都是不重復的對象了，只需要將其鍵值取出來轉為數組即可 16 for(item in result){ 17 finalResult.push(result[item]); 18 } 19 //console.log(finalResult);[{name:"羽根",artist:"air"},{name:"晴天",artist:"周傑倫"}] 20 return finalResult; 21 } 22 console.log(unique(songs));
多個數組對象去重
var songs = [ {name:"羽根",artist:"air"}, {name:"晴天",artist:"周傑倫"}, {artist:"周傑倫",name:"晴天"} ]; var arr = [ {name:"羽根",artist:"air"}, {name:"晴天",artist:"周傑倫"}, ] for (let i = 0; i < arr.length; i++) { songs.push(arr[i]) } console.log(songs); function unique(songs){ let result = {}; let finalResult=[]; for(let i=0;i<songs.length;i++){ result[songs[i].name]=songs[i];//因為songs[i].name不能重復,達到去重效果,且這里必須知曉"name"或是其他鍵名 } //console.log(result);{"羽根":{name:"羽根",artist:"air"},"晴天":{name:"晴天",artist:"周傑倫"}} //現在result內部都是不重復的對象了，只需要將其鍵值取出來轉為數組即可 for(item in result){ finalResult.push(result[item]); } //console.log(finalResult);[{name:"羽根",artist:"air"},{name:"晴天",artist:"周傑倫"}] return finalResult; } console.log(unique(songs));