javascript - regex to find url in a text -

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I have to find the first URL in the text with regular expressions:

For example: 

  I love this website: http: //www.youtube.com/musicIt's fantastic   
 or  
  [Es] Http: //www.youtube.com/music] text    
 
 
 you can not Do it completely with a regular expression, you may be interested in it, there is a bit more information about it, but even they look very weak. To capture which cases you will need an extra check outside of your regular expression.

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