增加字符串中的最后一个数字

Question

given the following string:

Backticks[0].Folders[0]

I need to increment the latter number.

I'm not an expert with Regexp replacements, I tried this but it also selects the bracket.

href = href.replace(/\d+]$/gi, matchedNumber++);

Is it possible to do the selection, incremental and replacement in a one liner?

Answer 1

它有可能在一个行做

'Ace[0].Folders[0]'.replace(/\d+(?=]$)/, function(i) { return parseInt(i) + 1; })

Answer 2

Use a positive lookahead:

/\d(?=]$)/gi

This will make sure there is any character after then the end of string after the digit, without including it in the replace.

If you would like to increment it, you could use match and parseInt :

var href = this.href;
var re = /\d(?=.$)/gi
href = href.replace(re, parseInt(href.match(re))+1);

Here is a page where you can learn more about this.

Here is a fiddle.