Let's say I have the following string:
str = "http://www.google.com/joao.pedro?a=b";
So I want to get just john.pedro using JavaScript .
I think you can do with Regex somehow, can anyone help me how?
I thought of something like, use this regular expression:
(http://www.google.com/)([\d\w\.]+)
And get the value that would be between the second parentheses. In PHP you can do something like this using the preg_match function, but what about JavaScript?
In this case, for solution you need to use the match function.
This function will return an array with occurrences of the regular expression.
In this application:
string = "http://www.google.com/joao.pedro?a=b";
a = string.match(/(http:\/\/www\.google\.com\/)([\d\w\.]+)/);
returns an array:
Array [ "http://www.google.com/joao.pedro", "http://www.google.com/", "joao.pedro" ]
See that the first occurrence is the entire body of the string, and the subsequent occurrences would be the occurrences that the regular expression found in the string.
Very simple and does not need regex:
var str = "http://www.google.com/joao.pedro?a=b/";
var valor= str.substring(str.lastIndexOf(".com/")+5,str.lastIndexOf("?"));
Result: joao.pedro
explanation ".com/" or only "/" , the bar may appear at the end of the link and the codo would have to have validations to avoid or treat the string +5 is to remove the .com / from the result
One of the infinite (ie: .* x Infinity ) possibilities, a generic one is:
str.match(/^.*(:\/\/)*.*\/(.*)[#\?].*/)[2]
which can be translated from the beginning ( ^ ), any string 0- "Infinity" ( .* ), except for and followed by (://) (aka protocol), character string followed of / (domain), string (path - what we want), string started by ? (querystring) or # (hash location).
Partitioning String - "one line" version:
(((str
.split('://')[1] || '')
.split('/')[1] || '')
.split('?')[0] || '')
.split('#')[0]
Using HTMLHyperlinkElementUtils :
var a = document.createElement('a')
a.href="http://www.google.com/joao.pedro?a=b"
a.pathname.substring(1)
* I'm not taking into account other little used URI parts on the Web, such as username and password.
const regex = /[a-z]\/([\w.]+)/g;
const rege = (text) => {
let user = regex.exec(text);
return hue[1];
}
console.log(
rege("http://www.google.com/joao.pedro?a=b")
)
My regex looks like this:
/(\w+\.\w+)(?=\?)/
(\w+\.\w+) Search for text that has . followed by text. (?=\?) use positive lookahead, that is, looking forward search for ?