关于数组操作的npm包

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安装npm包

npm i great-jsutils --save

导入api

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

示例1：字符串移除

//字符串移除，第一个参数是被操作的数组，第二个参数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：对象移除

//对象移除，第一个参数是被操作的数组，第二个参数是需要移除的对象，第三个对象的主键
testArray(){
    let objArr=[{"id":"1","name":"赵云"},{"id":"2","name":"诸葛亮"}];
    ArrayUtils.remove(objArr,{"id":"2"},"id");
    console.log(JSON.stringify(objArr));//[{"id":"1","name":"赵云"}]
}

示例3：数组中的对象key替换

//数组中的对象key替换，例如源数据为[{"name":"张三"}]替换为[{"text":"张三"}]
testArray(){
    let datas=[{"name":"张三","sex":"1"}];
    let keys={"id":"key"};
    let result=ArrayUtils.updateKey(data,keys);
    console.log(result);//[{"text":"张三"}]
}

示例4：数组中对象key替换，并增加新的属性

//数组中对象key替换，例如源数据为[{"name":"张三","age":80}]替换为[{"text":"张三","age":80,"ageGroup":"老年人"}];
//这里是根据某些值特征，增加新的属性
testArray(){
    let datas=[{"name":"张三","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":"张三","age":80,"ageGroup":"老年人"}];
}

示例5：数组中对象key替换，含有子节点

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：验证是否为数组

ArrayUtils.validArray(datas)

示例7：树状数据添加子数据

向指定节点，追加新的子节点

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);
}