[JavaScript] Regular Expression syntax

RegExp(pattern [, flags])
/pattern/flags

• pattern
• The text of the regular expression.
• flags
• If specified, flags can have any combination of the following values:
• g
• global match
• 找全部。因為 REGEX 預設碰到第一個符合的內容就結束比對。
• i
• ignore case 勿略大小寫。
• m
• Treat beginning and end characters (^ and $) as working over multiple lines (i.e., match the beginning or end of each line (delimited by \n or \r), not only the very beginning or end of the whole input string)

* Reference
- RegExp | MDN
- 石頭閒語:Regular Expression (RegExp) in JavaScript - 樂多日誌