regex - Javascript reg ex combination - 


  var cost_price = "15..00" / * Cost value should be such that there should be numbers and one Do not have more points than * / if (/ ^ ([0-9]). ([.]) /. Exam (cost_price) {documet.write ("true cost value"); }   
 Now let me get the Hello message despite two points in cost_price if I should change in the condition?  
 P.S. I have 2 reg pre-combined one to see if the dot happens only once, checks for the accuracy of points and other investigations.   
 
 
 why not  
  / ^ [0-9] + (\ [0- 9] +)? $ /   
 And so make the final part completely optional? (?  specifies " 0 to 1 times ") " 
  regular expression view  
 If you want to allow  .15 , you first have to  [0-9] + < / Code> (1 coincides with an infinite time) from  [0-9] *  (corresponds to 0 for eternity).

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