{"id":25384,"date":"2024-11-24T12:39:42","date_gmt":"2024-11-24T04:39:42","guid":{"rendered":"https:\/\/fwq.ai\/blog\/25384\/"},"modified":"2024-11-24T12:39:42","modified_gmt":"2024-11-24T04:39:42","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-javascript-%e7%bb%9f%e8%ae%a1%e6%95%b0%e7%bb%84%e4%b8%ad%e9%87%8d%e5%a4%8d%e9%a1%b9%e7%9a%84%e6%ac%a1%e6%95%b0%e5%b9%b6%e6%9b%b4%e6%96%b0%e5%85%83%e7%b4%a0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/25384\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 JavaScript \u7edf\u8ba1\u6570\u7ec4\u4e2d\u91cd\u590d\u9879\u7684\u6b21\u6570\u5e76\u66f4\u65b0\u5143\u7d20\u5c5e\u6027\uff1f"},"content":{"rendered":"

\"\u5982\u4f55\u4f7f\u7528<\/p>\n

\u5224\u65ad\u6570\u7ec4\u4e2d\u91cd\u590d\u9879\u5e76\u7edf\u8ba1\u91cd\u590d\u6b21\u6570<\/strong><\/p>\n

\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u4ece\u540e\u7aef\u83b7\u53d6\u7684\u6570\u7ec4\u5bf9\u8c61\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5224\u65ad\u7279\u5b9a\u5b57\u6bb5\u662f\u5426\u91cd\u590d\u3002\u6bd4\u5982\u6839\u636e\u5176\u4e2d\u7684 “Data.NO” \u6765\u5224\u65ad\uff0c\u5e76\u65b0\u5efa\u4e00\u4e2a “\u91cd\u590d\u6b21\u6570” \u5b57\u6bb5\u6765\u663e\u793a\u91cd\u590d\u7684\u6b21\u6570\u3002<\/p>\n

\u4e3a\u4e86\u89e3\u51b3\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n

    \n
  1. \u4f7f\u7528 reduce() \u65b9\u6cd5\uff1areduce() \u51fd\u6570\u7528\u4e8e\u7d2f\u79ef\u4e00\u4e2a\u6570\u7ec4\u7684\u5143\u7d20\uff0c\u5c06\u5b83\u4eec\u805a\u5408\u4e3a\u4e00\u4e2a\u5355\u4e00\u7684\u8fd4\u56de\u503c\u3002\u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528 reduce() \u51fd\u6570\u6765\u7edf\u8ba1\u91cd\u590d\u9879\u7684\u6b21\u6570\u3002<\/li>\n
  2. \u67e5\u627e\u6570\u7ec4\u4e2d\u7279\u5b9a\u5143\u7d20\u7684\u7d22\u5f15\uff1afindIndex() \u65b9\u6cd5\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u5982\u679c\u672a\u627e\u5230\u5339\u914d\u9879\uff0c\u5219\u8fd4\u56de -1\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 findIndex() \u65b9\u6cd5\u6765\u67e5\u627e\u6570\u7ec4\u4e2d\u91cd\u590d\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/li>\n
  3. \u68c0\u67e5\u7d22\u5f15\u662f\u5426\u4e3a -1\uff1a\u5982\u679c findIndex() \u8fd4\u56de -1\uff0c\u5219\u8868\u793a\u6570\u7ec4\u4e2d\u4e0d\u5b58\u5728\u4e0e\u7ed9\u5b9a\u6761\u4ef6\u5339\u914d\u7684\u5143\u7d20\u3002<\/li>\n
  4. \u521d\u59cb\u5316\u4e00\u4e2a\u7a7a\u6570\u7ec4\u548c\u4e00\u4e2a\u8ba1\u6570\u5668\uff1a\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u6765\u5b58\u50a8\u53bb\u91cd\u540e\u7684\u5143\u7d20\uff0c\u4ee5\u53ca\u4e00\u4e2a\u8ba1\u6570\u5668\u6765\u8ddf\u8e2a\u6bcf\u4e2a\u5143\u7d20\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/li>\n
  5. \u904d\u5386\u6570\u7ec4\u5e76\u66f4\u65b0\u5143\u7d20\uff1a\u5728 reduce() \u51fd\u6570\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u5982\u679c\u5143\u7d20\u5728\u53bb\u91cd\u540e\u6570\u7ec4\u4e2d\u5b58\u5728\uff08\u5373\u7d22\u5f15\u4e0d\u4e3a -1\uff09\uff0c\u5219\u66f4\u65b0\u8be5\u5143\u7d20\u7684 “\u91cd\u8907\u6b21\u6578” \u5b57\u6bb5\u5e76\u9012\u589e\u8ba1\u6570\u5668\u3002\u5426\u5219\uff0c\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u53bb\u91cd\u540e\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ol>\n

    \u4ee5\u4e0b\u662f\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n

    let list = [\n    {\n        DF:343,\n        Fstep: 0.2,\n        NO:1004\n    },\n    {\n        DF:344,\n        Fstep: 0.2,\n        NO:1005\n    },\n    {\n        DF:345,\n        Fstep: 0.2,\n        NO:1004\n    },\n    {\n        DF:346,\n        Fstep: 0.2,\n        NO:1004\n    },\n    {\n        DF:347,\n        Fstep: 0.2,\n        NO:1006\n    },\n    {\n        DF:348,\n        Fstep: 0.2,\n        NO:1005\n    }\n];\n\nlet newArr = [], list1 = [], i = 0;\nlet timer = setInterval(() => {\n    if(i === list.length) {\n      clearInterval(timer);\n      return;\n    }\n    \/\/ \u6a21\u62df\u6bcf3s\u540e\u7aef\u8fd4\u56de\u4e00\u6761\u6570\u636e\n    list1 = [list[i]];\n    i++;\n    fn(list1);\n}, 3000);\n\nfunction fn (arr) {\n    newArr = arr.reduce((s, v) => {\n        let index = s.findIndex(it => it.NO === v.NO);\n        index !== -1  ? s[index] = {...v, startTime: s[index].startTime,\n        endTime: getNowDate(), count: ++s[index].count} : s.push({...v, count: 1, startTime: getNowDate(), endTime: getNowDate()});\n        return s;\n    }, newArr);\n    console.log(newArr);\n}\n\n\/\/ \u683c\u5f0f\u5316\u65e5\u5bf9\u8c61\nconst getNowDate = () => {\n  var date = new Date();\n  var sign2 = \":\";\n  var year = date.getFullYear() \/\/ \u5e74\n  var month = date.getMonth() + 1; \/\/ \u6708\n  var day = date.getDate(); \/\/ \u65e5\n  var hour = date.getHours(); \/\/ \u65f6\n  var minutes = date.getMinutes(); \/\/ \u5206\n  var seconds = date.getSeconds() \/\/\u79d2\n  var weekArr = ['\u661f\u671f\u4e00', '\u661f\u671f\u4e8c', '\u661f\u671f\u4e09', '\u661f\u671f\u56db', '\u661f\u671f\u4e94', '\u661f\u671f\u516d', '\u661f\u671f\u5929'];\n  var week = weekArr[date.getDay()];\n  \/\/ \u7ed9\u4e00\u4f4d\u6570\u7684\u6570\u636e\u524d\u9762\u52a0 \u201c0\u201d\n  if (month >= 1 && month <= 9) {\n    month = \"0\" + month;\n  }\n  if (day >= 0 && day <= 9) {\n    day = \"0\" + day;\n  }\n  if (hour >= 0 && hour <= 9) {\n    hour = \"0\" + hour;\n  }\n  if (minutes >= 0 && minutes <= 9) {\n    minutes = \"0\" + minutes;\n  }\n  if (seconds >= 0 && seconds <= 9) {\n    seconds = \"0\" + seconds;\n  }\n  return year + \"-\" + month + \"-\" + day + \" \" + hour + sign2 + minutes + sign2 + seconds;\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u901a\u8fc7\u4ee5\u4e0a\u4ee3\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u6839\u636e “Data.NO” \u5b57\u6bb5\u5224\u65ad\u91cd\u590d\u9879\uff0c\u5e76\u5728\u91cd\u590d\u9879\u4e2d\u6dfb\u52a0 “\u91cd\u8907\u6b21\u6578” \u5b57\u6bb5\uff0c\u7edf\u8ba1\u91cd\u590d\u7684\u6b21\u6570\uff0c\u5e76\u5c06\u5176\u6e32\u67d3\u5230\u9875\u9762\u4e2d\u3002<\/p>\n
    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528 JavaScript \u7edf\u8ba1\u6570\u7ec4\u4e2d\u91cd\u590d\u9879\u7684\u6b21\u6570\u5e76\u66f4\u65b0\u5143\u7d20\u5c5e\u6027\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5224\u65ad\u6570\u7ec4\u4e2d\u91cd\u590d\u9879\u5e76\u7edf\u8ba1\u91cd\u590d\u6b21\u6570 \u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u4ece\u540e\u7aef\u83b7\u53d6\u7684\u6570\u7ec4\u5bf9\u8c61\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5224\u65ad\u7279\u5b9a\u5b57\u6bb5\u662f\u5426\u91cd\u590d\u3002\u6bd4\u5982\u6839\u636e\u5176\u4e2d\u7684 “Data.NO” \u6765\u5224\u65ad\uff0c\u5e76\u65b0\u5efa\u4e00\u4e2a “\u91cd\u590d\u6b21\u6570” \u5b57\u6bb5\u6765\u663e\u793a\u91cd\u590d\u7684\u6b21\u6570\u3002 \u4e3a\u4e86\u89e3\u51b3\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a \u4f7f\u7528 reduce() \u65b9\u6cd5\uff1areduce() \u51fd\u6570\u7528\u4e8e\u7d2f\u79ef\u4e00\u4e2a\u6570\u7ec4\u7684\u5143\u7d20\uff0c\u5c06\u5b83\u4eec\u805a\u5408\u4e3a\u4e00\u4e2a\u5355\u4e00\u7684\u8fd4\u56de\u503c\u3002\u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528 reduce() \u51fd\u6570\u6765\u7edf\u8ba1\u91cd\u590d\u9879\u7684\u6b21\u6570\u3002 \u67e5\u627e\u6570\u7ec4\u4e2d\u7279\u5b9a\u5143\u7d20\u7684\u7d22\u5f15\uff1afindIndex() \u65b9\u6cd5\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5339\u914d\u7684\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u5982\u679c\u672a\u627e\u5230\u5339\u914d\u9879\uff0c\u5219\u8fd4\u56de -1\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 findIndex() \u65b9\u6cd5\u6765\u67e5\u627e\u6570\u7ec4\u4e2d\u91cd\u590d\u5143\u7d20\u7684\u7d22\u5f15\u3002 \u68c0\u67e5\u7d22\u5f15\u662f\u5426\u4e3a -1\uff1a\u5982\u679c findIndex() \u8fd4\u56de -1\uff0c\u5219\u8868\u793a\u6570\u7ec4\u4e2d\u4e0d\u5b58\u5728\u4e0e\u7ed9\u5b9a\u6761\u4ef6\u5339\u914d\u7684\u5143\u7d20\u3002 \u521d\u59cb\u5316\u4e00\u4e2a\u7a7a\u6570\u7ec4\u548c\u4e00\u4e2a\u8ba1\u6570\u5668\uff1a\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u6765\u5b58\u50a8\u53bb\u91cd\u540e\u7684\u5143\u7d20\uff0c\u4ee5\u53ca\u4e00\u4e2a\u8ba1\u6570\u5668\u6765\u8ddf\u8e2a\u6bcf\u4e2a\u5143\u7d20\u51fa\u73b0\u7684\u6b21\u6570\u3002 \u904d\u5386\u6570\u7ec4\u5e76\u66f4\u65b0\u5143\u7d20\uff1a\u5728 reduce() \u51fd\u6570\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u904d\u5386\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u5982\u679c\u5143\u7d20\u5728\u53bb\u91cd\u540e\u6570\u7ec4\u4e2d\u5b58\u5728\uff08\u5373\u7d22\u5f15\u4e0d\u4e3a -1\uff09\uff0c\u5219\u66f4\u65b0\u8be5\u5143\u7d20\u7684 “\u91cd\u8907\u6b21\u6578” \u5b57\u6bb5\u5e76\u9012\u589e\u8ba1\u6570\u5668\u3002\u5426\u5219\uff0c\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u53bb\u91cd\u540e\u6570\u7ec4\u4e2d\u3002 \u4ee5\u4e0b\u662f\u4ee3\u7801\u793a\u4f8b\uff1a let list = [ { DF:343, Fstep: 0.2, NO:1004 }, { DF:344, Fstep: 0.2, NO:1005 }, { DF:345, Fstep: 0.2, NO:1004 }, { DF:346, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-25384","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/25384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=25384"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/25384\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=25384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=25384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=25384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}