Javascript replace using regular expression

Question

I need replace url from a string.

example:

var container = "hello http://www.youtube.com/watch?v=r94hrE10S84 hello";

I want replace to:

container = "hello <iframe src='//www.youtube.com/embed/r94hrE10S84' </iframe> guys";

Im trying to do:

container = container.replace("http://www.youtube.com/watch?v=(/\w*\d+\w*/)","<iframe src='//www.youtube.com/embed/1ドル' </iframe>");

thank you

Answer 1

container.replace(/(https?:\/\/\S+)/i, "<iframe src='1ドル' </iframe>");

Answer 2

You can use:

repl = container.replace(/(https?:\/\/\S+)/i, function(m) { 
 if (m.indexOf(".youtube."))
 return m.replace(/^(.+?)\/watch\?v=(.+)$/, "<iframe src='1ドル/embed/2ドル'> </iframe>");
 else return m;
 });
//=> ello <iframe src='http://www.youtube.com/embed/r94hrE10S84'> </iframe> hello

• MrVila: Ty but it don't change watch?v= for embed/ and I only want change url of youtube.

Answer 3

(?:https?://)?(?:www\.)?youtu(?:be\.com/watch\?(?:.*?&(?:amp;)?)?v=|\.be/)([\w‌​\-]+)(?:&(?:amp;)?[\w\?=]*)?

ID Should be on first group.

So your code will be like:

var container = "http://www.youtube.com/watch?v=r94hrE10S84";
var reg = /(?:https?:\/\/)?(?:www\.)?youtu(?:be\.com\/watch\?(?:.*?&(?:amp;)?)?v=|\.be\/)([\w‌​\-]+)(?:&(?:amp;)?[\w\?=]*)?/;
container = container.replace(reg,"<iframe src=\"//www.youtube.com/embed/1ドル\"></iframe>");

This take into account even link w/o www, w/o protocol and short links (youtu.be)

Fiddle

Source