let data = [ { "subject_id": 948, "xmdw": "長春市實驗中學", "sbnd": 2023, "xmmc": "長春市實驗中學食堂廚具設備更換項目" }, { "subject_id": 949, "xmdw": "長春市教育技術裝備與信息中心", "sbnd": 2022, "xmmc": "長春市教育裝備與信息化項目智慧管理系統" } ]; let subjectIds = data.map(item => item.subject_id); console.log(subjectIds); //輸出: [948, 949] ========================================================= let arr = ["948", "949"]; arr = arr.filter(item => item !== "949"); console.log(arr); //輸出: ["948"] ======================================================= let arr = [ { "subject_id": 948, "xmdw": "長春市實驗中學", "sbnd": 2023, "xmmc": "長春市實驗中學食堂廚具設備更換項目" }, { "subject_id": 949, "xmdw": "長春市教育技術裝備與信息中心", "sbnd": 2022, "xmmc": "長春市教育裝備與信息化項目智慧管理系統" } ]; arr = arr.filter(item => item.subject_id !== 949); console.log(arr); //輸出: [ { "subject_id": 948, "xmdw": "長春市實驗中學", "sbnd": 2023, "xmmc": "長春市實驗中學食堂廚具設備更換項目" } ]