4
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 3 years have passed since last update.

JavaScriptで文字が全て半角数字かどうか判定する

Last updated at Posted at 2020-02-04

JavaScriptで渡した文字が全て半角数字かどうか判定する方法です。

e1xport default class AsciiNumberTester {
  static containsOnlyHalfWidthNumber(str) {
    return /^[0-9]+$/.test(str);
  }
}
import AsciiNumberTester from 'path/to/class_file';

AsciiNumberTester.containsOnlyHalfWidthNumber(this.value)

-----------以下解説----------------

4
0
2

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
4
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?