Can't test the javascript regex correctly -


Hello, I have the following Reagax which can not be accepted on JavaScript 

  If ($ (Collar) .attr ('value'). ToString (). Search ('/ (? = \ D * \ d \ D * \ d). {8,15} / g') == -1)

Where 

  $ (collar) .attr ('value'). ToString () = "fdsddfsd45"

I have it -1

Also I try to test it with pattern 

  if (pattern.test (! $ (Collar) .attr ('value'))) {  
 Where  < Pre  pattern = / ^ (? = D * dD * d) {8,15} $ /

me false

< Pre> $ (collar) .attr ('value') .tstring () = "fdsddfsd45"

When I tried to test it through the desktop application, Which corresponds to this type of string "fdsddfsd45" expression (? = \ D * \ d \ D * \ D). {8,15} Do not I know this JavaScript bug? Regex in Javascript should either be a string or a regex literally in your case, should do this: 

  .search (/ (? = \ D * \ d \ D * \ d). {8,15} /) == -1

Note that I have removed single quotes. I have also removed the / g flag - since you are searching for any match, you do not need it.

For completeness, when it is less useful, you have written regex as a string, but you have to save all the backslashes, or JavaScript as \ d Even before parsing d , regex will be reached. In this situation, you do not need a slash (for example, which uses both), unlike PHP: 

  s.search ('(? = \\ D * Example:

-

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