RegEx 生成器

g i m

//g

My User
12345.67890
!@#$%^&*()
abc@example.com

定義正則

const regex = /[a-zA-Z0-9]+/g;

判斷布林值

const isMatch = regex.test(text);

提取單一匹配

const firstMatch = text.match(regex)?.[0];

提取所有匹配 (陣列)

const allMatches = [...text.matchAll(regex)].map(m => m[0]);