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Posted By

noah on 05/27/09


Tagged

regex javascript filter match regular Expression regulareexpression


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Use a variable in a JavaScript regular expression

 / Published in: JavaScript
 

Use the RegExp constructor to create the regular expression. You can pass RegExp any string as an argument and it will be converted to a regex.

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  1. var baz = "foo"; 
  2.  
  3. var filter = new RegExp(baz + "d")
  4.  
  5. "food fight".match(filter);
  6.  
  7. // returns ["food"]

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