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// $.grep

// Finds the elements of an array which satisfy a filter function. The original array is not affected.

var arr = [ 1, 9, 3, 8, 6, 1, 5, 9, 4, 7, 3, 8, 6, 9, 1 ];

var newArr = $.grep(arr, function( a ) {
  return a !== 9;
});