正则表达式删除所有以特殊字符开头的字符串

Question

I have a string look like:

var str = https://sharengay.com/movie13.m3u8?pid=144.21.112.0&tcp=none

I want to remove at start ?pid= to end. The result look like:

var str = https://sharengay.com/movie13.m3u8

I tried to:

str = str.replace(/^(?:?pid=)+/g, "");

But it show error like:

Invalid regular expression: /^(?:?pid=)+/: Nothing to repeat

Answer 1

You may create a URL object and concatenate the origin and the pathname :

 var str = "https://sharengay.com/movie13.m3u8?pid=144.21.112.0&tcp=none"; var url = new URL(str); console.log(url.origin + url.pathname); 

Answer 2

You can use split

 var str = "https://sharengay.com/movie13.m3u8?pid=144.21.112.0&tcp=none" var result = str.split("?pid=")[0]; console.log(result); 

Answer 3

If you really want to do this at the string level with regex, it's simply replacing /\\?pid=.*$/ with "" :

str = str.replace(/\?pid=.*$/, "");

That matches ?pid= and everything that follows it ( .* ) through the end of the string ( $ ).

Live Example:

 var str = "https://sharengay.com/movie13.m3u8?pid=144.21.112.0&tcp=none"; str = str.replace(/\\?pid=.*$/, ""); console.log(str); 

Answer 4

You have to escape the ? and if you want to remove everything from that point you also need a .+ :

 str = str.replace(/\?pid=.+$/, "")

Answer 5

You can use split function to get only url without query string.

Here is the example.

var str = ' https://sharengay.com/movie13.m3u8?pid=144.21.112.0&tcp=none ';

var data = str.split("?");

alert(data[0]);

Answer 6

You can simply use split(), which i think is simple and easy.

 var str = "https://sharengay.com/movie13.m3u8?pid=144.21.112.0&tcp=none"; str = str.split("?pid"); console.log(str[0]);