1. /**
    2.  * 条件解析
    3.  * cond : 用户设置条件
    4.  * condList : 条件列表
    5.  */
    6. analyseCond = (cond, condList) => {
    7.     // 未设置条件，默认通过
    8.     var condMap = {
    9.         cond, // 用户设置条件
    10.         analyseCond: "true", // 解析后条件
    11.         eleList : [] // 条件变量列表
    12.     };
    13.     if(cond && cond.trim()!==""){
    14.         var condEleList = [];
    15.         // cond 解析并排序（倒排序）
    16.         cond.match(/#\d+/g).forEach(item =>{
    17.             var no = item.match(/\d+/)[0];
    18.             condEleList.push(parseInt(no));
    19.         })
    20.         // 倒排序
    21.         condEleList.sort((a,b)=>b>a);
    22.         console.log(condEleList);
    23.         // 解析自定义条件
    24.         var analyseCond = cond;
    25.         var eleList = [];
    26.         var operList = [];
    27.         var valList = [];
    28.         var detailList = [];
    29.         condEleList.forEach(no => {
    30.             var condInfo = condList[no-1];
    31.             if(condInfo){
    32.                 const {cond, oper, value} = condInfo;
    33.                 if(!eleList.includes(cond)){
    34.                     eleList.push(cond);
    35.                     operList.push(oper);
    36.                     valList.push(value);
    37.                     detailList.push({cond, oper, value});
    38.                 }
    39.                 console.log(cond, oper, value);
    40.                 var newCond = "";
    41.                 if([">", "<", ">=", "<=", "==", "!="].includes(oper)){
    42.                     newCond = `${cond} ${oper} ${value}`;
    43.                 }else if(["in"].includes(oper)){
    44.                     newCond = JSON.stringify(value.split(/[,;，； ]/))+`.includes(""+${cond})`;
    45.                 }else if(["notin"].includes(oper)){
    46.                     newCond = "!"+JSON.stringify(value.split(/[,;，； ]/))+`.includes(""+${cond})`;
    47.                 }else{
    48.                     console.log(`不支持的操作类型【${oper}】`);
    49.                 }
    50.                 console.log(newCond)
    51.                 analyseCond = analyseCond.replace(new RegExp(`#${no}`, "g"), newCond);
    52.             }else{
    53.               // 不存在的条件序号，默认都为true
    54.                 analyseCond = analyseCond.replace(new RegExp(`#${no}`, "g"), "true");
    55.             }
    56.         })
    57.         condMap.analyseCond = analyseCond;
    58.         condMap.eleList = eleList;
    59.         condMap.operList = operList;
    60.         condMap.valList = valList;
    61.         condMap.detailList = detailList;
    62.         console.log(condMap);
    63.     }
    64.     return condMap;
    65. }
    67. /**
    68.  * 数据集过滤
    69.  * dataset : 数据集
    70.  * condMap : 自定义条件信息，通过analyseCond(cond, condList)解析后的条件信息
    71.  */
    72. filterByCond=(dataset, condMap)=>{
    73.   var filteredList = [];
    74.   const {analyseCond, eleList} = condMap;
    75.     dataset.forEach(data=>{
    76.       var varStr = "";
    77.         eleList.forEach(quota=>{
    78.             varStr += "var ";
    79.             varStr += quota ;
    80.             varStr += " = " ;
    81.             varStr += data[quota];
    82.             varStr += ";\n";
    83.         })
    84.         console.log(varStr, analyseCond);
    85.         var visable = eval(varStr + analyseCond);
    86.         if(visable){
    87.             filteredList.push(data);
    88.         }
    89.     })
    90.     return filteredList;
    91. }
    93. // 测试条件列表
    94. var condList = [
    95.     {cond:"quota1", oper:">", value:"10"},
    96.     {cond:"quota2", oper:"==", value:"2"},
    97.     {cond:"quota3", oper:"notin", value:"3,5"},
    98.     {cond:"quota4", oper:">=", value:"8"},
    99.     {cond:"quota5", oper:">=", value:"8"},
    100.     {cond:"quota6", oper:">=", value:"8"},
    101.     {cond:"quota7", oper:">=", value:"8"},
    102.     {cond:"quota8", oper:">=", value:"8"},
    103.     {cond:"quota9", oper:">=", value:"8"},
    104.     {cond:"quota10", oper:">=", value:"8"},
    105.     {cond:"quota11", oper:">=", value:"8"},
    106.     {cond:"quota12", oper:">=", value:"8"},
    107.     {cond:"quota13", oper:">=", value:"8"},
    108.     {cond:"quota14", oper:"in", value:"1"},
    109. ];
    111. // 测试用户设置条件
    112. var cond = "(#1 || #2) && #3 && (#4 || #14 ) && #15";
    114. // 自定义条件解析
    115. var condMap = analyseCond(cond, condList);
    117. // 测试数据
    118. var testDataList = [
    119. {quota1: 1, quota2: 2, quota3: 4, quota4:7},
    120. {quota1: 1, quota2: 2, quota3: 3, quota4:9},
    121. {quota1: 1, quota2: 3, quota3: 4, quota4:4},
    122. {quota1: 11, quota2: 3, quota3: 4, quota4:9},
    123. ]
    125. // 测试数据过滤
    126. var filteredDataset = filterByCond(testDataList, condMap);
    127. console.log(filteredDataset);