如何在javascript中替换字符串中的字符

Question

i have a string : 我有一个字符串：

var s="here_we_go";

how can i replace all occurrence of '_' by '$' so the string will become: 我如何用“ $”替换所有出现的“ _”，所以字符串将变为：

s="here$we$go";

Answer 1

s.replace(/_/g, '$');

The g here ensures every (not just one) occurrences of _ will be replaced by $ . 这里的g确保_每一次（不仅是一次）都会被$代替。