JavaScript Regex should be only containing N numeric characters -

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I need javascript regexp to validate some patterns 
  745128 745128, 184122 745128, 184122, 425412   
 The value separated by each comma should only contain 6 numeric characters   
 
 
 You can try regex below.  
  ^ \ d {6} (?:, \ S \ d {6}) * $   
 or  
 one The second option was added because I do not know clearly about the empty space.    
 
 
 
 
 Strong> Explanation:   
  ^ starts with string \ d {6} digits (0-9) (6 times) (?: Group, but do not capture (0 or more) Bar): 'white space' (\ n, \ r, \ t, \ F, and "") \ d {6} digits (0-9) (6 times)) * from an optional \ n The end of the first grouping, and the end of the string

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