I have a basic regex that should return string after the last backslash .
Regex :
/([^\]*$)/
Works fine in Regex101.
Output :
random.html
But not in Javascript example bellow :
console.log("C:fakepathextrarandom.html".match(/([^\]*$)/));Output :
[“C:akepathextra andom.html”, “C:akepathextra andom.html”, index: 0, input: “C:akepathextra andom.html”]
Answer
The problem is not with the RegEx, it’s with the string itself. In JavaScript strings is used to escape the following character.
The string
"C:fakepathextrarandom.html"
is after escaping
C:akepathextra andom.html
To use backslash in the string, escape them by preceding backslash.
"C:\fakepath\extra\random.html"
console.log("C:\fakepath\extra\random.html".match(/[^\]*$/));To get the text after last , use String#split and Array#pop
"C:\fakepath\extra\random.html".split('\').pop() // random.html
^^ Note: this backslash also need to be escaped.