JQ数组筛选，去重，对象数组求和

JQ数组筛选

var list = this.selArr.filter(x => x.checkedList.length > 0).map(x => ({
                    county: x.name,
                    liner: x.checkedList,
                    checkAll: x.checkAll,
                    condition,
                    count
                }))

split	：分割 

// 对象数组求和
var sum = arr.reduce(function(prev, cur) {
          return cur.字段+ prev
        }, 0)
 //数组去重
 $.unique(SelectIds.sort());
 
//对象数组去重
 uniqueFun(arr, type) {
     const res = new Map();
     return arr.filter((a) => !res.has(a[type]) && res.set(a[type], 1));
 },
 //关键词多选
 handlekeyChange(e) {
     for (var row of e) {
         this.checkedKeyword.push({ checked: true, keyWord: row.keyWord });
     }
     this.checkedKeyword = this.uniqueFun(this.checkedKeyword, "keyWord");;
 },