javascript split() using regEx

Question

i want to split "A//B/C" string using javascript split() function

"A//B/C".split(/\//g)

but it's output is ["A", "", "B", "C"] but my expected output is

["A/", "B", "C"]

how i do this using javascript ?

Answer 1

我更新了@Tushar答案，并尝试了它，这对我来说是可行的..增加了\\b以仅匹配正斜杠后跟单词边界，例如[az]和[0-9]

"A//B/C".split(/\/\b/)

Answer 2

尝试RegExp /\\/(?=[AZ]|$)/以匹配/如果后跟AZ或输入结尾）

"A//B/C".split(/\/(?=[A-Z]|$)/)

Answer 3

You need to split the string at a position, where the current character is "/" and the following character is not "/". However, the second (negative) condition should not be consumed by the regex. In other words: It shouldn't be regarded as delimeter. For this you can use a so called "look ahead". There is a positive "look ahead" and a negative one. Here we need a negative one, since we want to express "not followed by". The syntax is: (?!<string>) , whereas is what shouldn't 'follow'.

So there you go: /\\/(?!\\/)/

applied to your example:

"A//B/C".split(/\/(?!\/)/); // ["A/", "B", "C"]