CODEWITHSUNDEEP
jqueryregexmatch
sanchitkhanna26
sanchitkhanna26

Reputation: 2233

Not able to match a regexp - Jquery

I have this code in Jquery -:

message = '#Usain Bolt #Usain Bolt #Usain Bolt'; message = " "+message+" ";
var type1 = 'Usain Bolt';                                                       
if(message.match(type1))
{ 
  var matchOne = new RegExp(' #'+type1+' ', 'g');  
  var matchTwo = new RegExp('\n#'+type1+' ', 'g'); 

  message = message.replace(matchOne," @"+type1+" ").replace(matchTwo,"\n@"+type1+" ");  
}

The resulting message should be @Usain Bolt @Usain Bolt @Usain Bolt

But it becomes -: @Usain Bolt #Usain Bolt @Usain Bolt

Whats the problem. Thanks for help..

Upvotes: 0

Views: 87

Answers (1)

Tim Pietzcker
Tim Pietzcker

Reputation: 336168

The problem is that the spaces between #Usain Bolts are part of the match.

" #Usain Bolt #Usain Bolt #Usain Bolt "
 ^-----------^                         first match
                         ^-----------^ second match
             ^-----------^             no match (a character can only match once)

Use word boundaries instead:

message = '#Usain Bolt #Usain Bolt #Usain Bolt';
var type1 = 'Usain Bolt';                                                       
if(message.match(type1))
{ 
  var matchOne = new RegExp('#\\b'+type1+'\\b', 'g');  
  var matchTwo = new RegExp('\n#\\b'+type1+'\\b', 'g'); 

  message = message.replace(matchOne," @"+type1).replace(matchTwo,"\n@"+type1);  
}

Upvotes: 1

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