过滤 Typescript - Angular 中的 integer 数组

Question

I have an array [2, 5, 8, 12, 20, "2, 8"]

How I can filter the integer (2), Like this [2, "2, 8"]

I converted my array to string and make a filter but the results are [2, 12, 20, "2, 8"]

This is my code

   this.news = this.news.filter(d => d.news_category.toString().indexOf(2) > -1);

Answer 1

You can split the each array item, and see if there is a "2" value using Array.some()

 const input = [2, 5, 8, 12, 20, "2, 8"] const output = input.filter(d => d.toString().split(",").some(val => val.trim() === "8")) console.log(output)