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Check if array is empty in javascript

/ Published in: JavaScript
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  1. if (testarray.length <1) alert("array is empty");
  2.  
  3.  
  4. //or
  5.  
  6. if(A && A.length==0)
  7.  
  8. //or if you have other objects that A may be:
  9.  
  10. if(A && A.constructor==Array && A.length==0)

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