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ViewsWhy does this regex execution not return the match
My regex is:
let a = new RegExp("(?:https?:)?\/\/(?:www\.)?(?:facebook|fb)\.com\/(?<profile>(?![A-z]+\.php)(?!marketplace|gaming|watch|me|messages|help|search|groups)[\w.\-]+)\/?", "g")
It's basically a modification of the one seen here for facebook to extract the username from a facebook url.
My test string is https://facebook.com/peterparker and my code is:
a.exec("https://facebook.com/peterparker")
When I try this in RegExr, it works fine. It shows the correct group captured (peterparker).
Yet, when I try the same code in Google Chrome's console, the code returns null:
Why doesn't it show up in the chrome console?
·
Juan Pablo Isaza
1 answers
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Since you're creating your regex from a string, you have to escape your backslashes.
let a = new RegExp("(?:https?:)?\/\/(?:www\.)?(?:facebook|fb)\\.com\/(?<profile>(?![A-z]+\\.php)(?!marketplace|gaming|watch|me|messages|help|search|groups)[\\w.\\-]+)\\/?", "g")
console.log(a.exec("https://facebook.com/peterparker"))Creating it inline does not have this problem.
let a = /(?:https?:)?\/\/(?:www\.)?(?:facebook|fb)\.com\/(?<profile>(?![A-z]+\.php)(?!marketplace|gaming|watch|me|messages|help|search|groups)[\w.\-]+)\/?/g
console.log(a.exec("https://facebook.com/peterparker"))
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Juan Pablo Isaza
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