數組元素添加與刪除，包括樹結構數據

安裝npm包

npm i?great-jsutils --save

導入api

import {JsUtilsApi, ArrayUtils, Base64, TimeUtils,StringUtils } from "great-jsutils/index";

示例1：字符串移除

 //字符串移除，第一個參數是被操作的數組，第二個參數是需要移除的字符串
testArray(){
    let arr=["a","b","c"];
    ArrayUtils.remove(arr,"b");
    console.log(arr.join(","));//a,c
}

示例2：對象移除

//對象移除，第一個參數是被操作的數組，第二個參數是需要移除的對象，第三個對象的主鍵
testArray(){
    let objArr=[{"id":"1","name":"趙云"},{"id":"2","name":"諸葛亮"}];
    ArrayUtils.remove(objArr,{"id":"2"},"id");
    console.log(JSON.stringify(objArr));//[{"id":"1","name":"趙云"}]
}

示例3：數組中的對象key替換

//數組中的對象key替換，例如源數據為[{"name":"張三"}]替換為[{"text":"張三"}]

testArray(){
    let datas=[{"name":"張三","sex":"1"}];
    let keys={"id":"key"};
    let result=ArrayUtils.updateKey(data,keys);
    console.log(result);//[{"text":"張三"}]
}

示例4：數組中對象key替換，并增加新的屬性

//數組中對象key替換，例如源數據為[{"name":"張三","age":80}]替換為[{"text":"張三","age":80,"ageGroup":"老年人"}];

 //這里是根據某些值特征，增加新的屬性
testArray(){
    let datas=[{"name":"張三","sex":"1"}];
    let keys={"name":"text"};
    let result=ArrayUtils.updateKey(data,keys,function(){
        if(data["age"]>75){
            return {"ageGroup":"老年人"};
        }
    });
    console.log(result);//[{"text":"張三","age":80,"ageGroup":"老年人"}];
}

示例5：數組中對象key替換，含有子節點

function testArray(){
    let data=[{"id":"id-A","type":"1","children":[
        {"id":"id-A01","type":"2","children":[
            {"id":"id-A01-01","type":"3"}
        ]},
        {"id":"id-A03","type":"3"}
    ]}];
    let keys={"id":"key"};
    let result=ArrayUtils.updateKey(data,keys,function (data) {
        if(typeof data  == "object"){
            if(!data["children"] || data["children"]==null ||data["children"]["lenght"]==0){
                return {"isLeaf":true};
            }else{
                return {"childNum":data["children"]["length"]};
            }
        }
    });
    console.log(result);
}
testArray();

示例6：驗證是否為數組

ArrayUtils.validArray(datas)

示例7：樹狀數據添加子數據

向指定節點，追加新的子節點

function testArray(){
    let data=[{"id":"id-A","type":"1","children":[
        {"id":"id-A01","type":"2","children":[
            {"id":"id-A01-01","type":"3"}
        ]},
        {"id":"id-A03","type":"3"}
    ]}];
    let child={"id":"id-A03-01","pid":"id-A03"};
    let newData=ArrayUtils.addByParentId(data,child,"pid","id","children");
    console.log(result);
}

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