使用 Javascript 的正则表达式过滤数组

Question

I am not very well versed with coding. I have a set of strings in an array and I am trying to filter them out using regex but it's not working for me. I want my result array to return any string containing _ number like _0, _01, _000

and the filter that I am using is

 var myArray = ["bedroom_01", "bedroom_02", "bedroom", "bathroom_01"]; var result = myArray.filter(name => name.includes("/_\d+/g")); console.log(result);

The above code is returning me a blank array. Please let me know what am I doing wrong?

Answer 1

You need RegExp#test with a regex literal:

 var myArray = ["bedroom_01", "bedroom_02", "bedroom", "bathroom_01"]; console.log( myArray.filter(name => /_\d+/.test(name)) )

If you need to check if the array item ends with _ + digits, use /_\d+$/ .

Answer 2

What you are passing to includes is a string not a regexp and includes takes a string not a regexp instead you can use the match method

 var myArray = ["bedroom_01", "bedroom_02", "bedroom", "bathroom_01"]; var result = myArray.filter(name => name.match(/_\d+/)); console.log(result);