JavaScript替换特殊字符

Question

Let's say I want to replace this:

Test%20Test

into this:

Test\X20\Test

I know this sounds weird but I need for the string to look like that. And I can't get my head around this because of the last backlash. Is there any way with .replace() to achieve that? If I wanted just Test\\X20Test I could easily do string.replace(/%/g, '\\\\X'); but I need the backlash after the hexadecimal code.

Answer 1

简单的捕获组将起作用。

"Test%20Test".replace(/%([0-9A-F]{2})/ig, "\\X$1\\");