使用replace删除大写字母以外的所有内容

Question

Yeah, I'm trying to remove everything except the capital letters, though it doesn't really seem to go well.

I used the following code,

String.replace(/(?![A-Z])./, '');

It doesn't seem to work properly, while it does work using PHP.

Answer 1

在regex的末尾添加global选项 - 请参阅下面的演示：

 console.log("AkjkljKK".replace(/(?![AZ])./g, '')); 

Answer 2

you can use [^AZ] to remove everything except capital letters. Also use g to replace all occurrences and not just the first one.

 var str = "sOmeVALUE"; console.log(str.replace(/[^AZ]/g, ""));