JavaScript从字符串解析int

Question

我有字符串：“您可以为主题投票36次，对评论投票为84次”。

我需要从字符串中获得数字84（数字可以不同）。

我该怎么办？

Answer 1

试试这个：

/^You can vote \d\d times for topics and (\d\d) times for comments$/.exec(str); 

或者：

/^You can vote \d+ times for topics and (\d+) times for comments$/.exec(str); 

Answer 2

或尝试此律不同：演示http://jsfiddle.net/GyK7J/

代码

var s = "You can vote 36 times for topics and 84 times for comments".; 
var firstnumber = parseInt(/vote\s(\d+)/.exec(s)[1], 10); 
var second = /and\s([\d+]+)/.exec(s)[1];