javascript正则表达式替换不起作用？

Question

为什么这个正则表达式替换不起作用？

var url = 'http://myweb.com/page/1/id/2'; 

newUrl = url.replace('/page\/[0-9]+/', 'page/2'); //it must become http://myweb.com/page/2/id/2

Answer 1

你需要做两件事:

1. 改变str.replace以url.replace

2. 删除'正则表达式周围

   var url = 'http://myweb.com/page/1/id/2'; 
   
   newUrl = url.replace(/page\/[0-9]+/, 'page/2'); 
   

示例: http ://jsfiddle.net/fhqXn/