不区分大小写的javascript替换考虑到单词边界的正则表达式

Question

I am writing the replace function in javascript taking account into word boundary

blog = blog.toLowerCase().replace(new RegExp("\\b" + wordList[i].toLowerCase() + "\\b", 'g'), "value to replace");

Now this is a CASE SESITIVE Replace i want to make it CASE INSENSITIVE .

How can i accomplish this?

Though for Case Insensitive there is \\I but i dont know know how to fit it in my code

Any help is appreciated.

Answer 1

Just pass i with g in the flags argument of the new RegExp() constructor . Like so:

new RegExp("\\b" + wordList[i].toLowerCase() + "\\b", 'gi')

At that point, you should be able to remove all the String.toLowerCase calls:

var re = new RegExp("\\b" + wordList[i] + "\\b", 'gi');
blog = blog.replace(re, 'value to replace');

NB you may need to escape the value of worldList\\[i\\] so that your code does not accidentally try to create a malformed regexp.

Answer 2

将您的'g'更改为'gi' “ g”表示“全局”，“ i”表示“不区分大小写”：

..., 'gi'), "value...