javascript - 使用 Javascript 在逗号分隔的字符串中查找新值

Question

我有一个数组

       obj = ["30890560", "29092960", "28652336", "28642195", "26512957", "26190575", "25465297", "25144372", "23579449"]

我需要将它与逗号分隔的字符串进行比较

     "29092960,28652336,28642195,26512957,26190575,25465297,25144372"

有没有办法让我得到一个新的逗号分隔字符串，例如

       let newList = "30890560,23579449"

数组总是比用于比较的字符串有更多的值。这需要在 Vue.js 页面中使用 JavaScript 来完成，因此不需要 jQuery。

我需要拆分逗号分隔的字符串并比较数组中的每个值吗？

类似的东西

        ["30890560", "29092960", "28652336", "28642195", "26512957", "26190575", "25465297", "25144372", "23579449"].includes('30890560');

是否会创建一个循环来寻找错误值？我需要一些帮助来构建循环。谢谢

Answer 1

const arr1 = ["30890560", "29092960", "28652336", "28642195", "26512957", "26190575", "25465297", "25144372", "23579449"];
const str = "29092960,28652336,28642195,26512957,26190575,25465297,25144372";
const arr2 = str.split(','); // Convert CSV String to array

const res = arr1.filter(v => !arr2.includes(v));

console.log(res)

String/split ^_MDN
Array/filter ^_MDN
Array/includes ^_MDN