Javascript RegEx全局字符串搜索下划线字符（_）

Question

I am horrible with RegEx and I have been using this online tester for some time now and still can not find what I need.

So I have the string "2011_G-20_Cannes_summit". I want to replace all the underscores (_) with spaces.

So I want something like this:

var str = "2011_G-20_Cannes_summit";
str.replace(/_/g," "); or str.replace(/\_/g);

Though neither is working...

What am I missing?

Answer 1

That works fine. The replace method doesn't modify the existing string, it creates a new one. This will do what you want:

var str = "2011_G-20_Cannes_summit";
str = str.replace(/_/g," ");