基于关键JavaScript搜索和更新数组
我们有两个像这样的数组-
let arr1 =
[{"LEVEL":4,"POSITION":"RGM"},{"LEVEL":5,"POSITION":"GM"},{"LEVEL":5,"POSITION":"GMH"}]
let arr2 = [{"EMAIL":"test1@stc.com","POSITION":"GM"},
{"EMAIL":"test2@stc.com","POSITION":"GMH"},
{"EMAIL":"test3@stc.com","POSITION":"RGM"},
{"EMAIL":"test3@CSR.COM.AU","POSITION":"GM"}
]我们需要编写一个将属性级别添加到arr2的每个对象的函数，并从arr1的对象中拾取该对象，该对象具有与属性“POSITION”相同的值
让我们为该函数编写代码-
示例
let arr1 =
[{"LEVEL":4,"POSITION":"RGM"},{"LEVEL":5,"POSITION":"GM"},{"LEVEL":5,"POSI
TION":"GMH"}]
let arr2 = [{"EMAIL":"test1@stc.com","POSITION":"GM"},
{"EMAIL":"test2@stc.com","POSITION":"GMH"},
{"EMAIL":"test3@stc.com","POSITION":"RGM"},
{"EMAIL":"test3@CSR.COM.AU","POSITION":"GM"}
]
const formatArray = (first, second) => {
second.forEach((el, index) => {
const ind = first.findIndex(item => item["POSITION"] ===
el["POSITION"]);
if(ind !== -1){
second[index]["LEVEL"] = first[ind]["LEVEL"];
};
});
};
formatArray(arr1, arr2);
console.log(arr2);输出结果
控制台中的输出将为-
[
{ EMAIL: 'test1@stc.com', POSITION: 'GM', LEVEL: 5 },
{ EMAIL: 'test2@stc.com', POSITION: 'GMH', LEVEL: 5 },
{ EMAIL: 'test3@stc.com', POSITION: 'RGM', LEVEL: 4 },
{ EMAIL: 'test3@CSR.COM.AU', POSITION: 'GM', LEVEL: 5 }
]