使用JavaScript删除字符串末尾括号中的内容

Question

I wonder if anyone can suggest a way of stripping the parentheses (and their content inside) and the preceding space from a JavaScript string?

I'm using an iTunes XML feed and a lot of the movie titles have the year included, or "extended edition" etc.

I'd like to strip these out and just have a nice clean movie title.

Here are a couple of examples of what the string looks like now:

Midnight Special (2016)

Friday (1995)

And what I'd like it to look like after the trim.

Midnight Special

Friday

The length of the string could vary, otherwise I'd do a trim to a certain length. Many thanks in advance

Simon

Answer 1

Use String#replace method

str.replace(/\s*\(.*?\)$/gm, '')

 var res = `Midnight Special (2016) Friday (1995)`.replace(/\\s*\\(.+?\\)$/gm, '') console.log(res) 

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Regex explanation here.

Answer 2

You can use String.replace() with regex /\\s*\\(.*\\)\\s*$/gm :

"aaa (bb)".replace(/\s*\(.*\)\s*$/gm, ""); // "aaa"

 var str = "aaa (bb)\\ncccc \\nddd ()"; console.log(str.replace(/\\s*\\(.*\\)\\s*$/gm, "")); // "aaa\\ncccc\\nddd" 

Explanation: See https://regex101.com/r/dC0aP7/2

Pitfalls: Be aware that this regex replaces aa (b) and cc (d) with aa .

If you only want the last parenthesis removed, use /\\s*\\([^\\(]*\\)\\s*$/gm - which will however fail for aa (b(c)) which is replaced with aa (b .

Balanced parenthesis matching is not possible with regex alone.