ee.List.splice

 // An ee.List object. 
 var 
  
 list 
  
 = 
  
 ee 
 . 
 List 
 ([ 
 0 
 , 
  
 1 
 , 
  
 2 
 , 
  
 3 
 , 
  
 4 
 ]); 
 print 
 ( 
 'Original list' 
 , 
  
 list 
 ); 
 // If "other" argument is null, elements at positions specified by "start" and 
 // "count" are deleted. Here, the 3rd element is removed. 
 print 
 ( 
 'Remove 1 element' 
 , 
  
 list 
 . 
 splice 
 ({ 
 start 
 : 
  
 2 
 , 
  
 count 
 : 
  
 1 
 , 
  
 other 
 : 
  
 null 
 })); 
 // If "start" is negative, the position is from the end of the list. 
 print 
 ( 
 'Remove 2nd from last element' 
 , 
  
 list 
 . 
 splice 
 ( 
 - 
 2 
 , 
  
 1 
 )); 
 // Deletes 3 elements starting at position 1. 
 print 
 ( 
 'Remove multiple sequential elements' 
 , 
  
 list 
 . 
 splice 
 ( 
 1 
 , 
  
 3 
 )); 
 // Insert elements from the "other" list without deleting existing elements 
 // by specifying the insert "start" position and setting "count" to 0. 
 print 
 ( 
 'Insert new elements' 
 , 
  
 list 
 . 
 splice 
 ( 
 2 
 , 
  
 0 
 , 
  
 [ 
 'X' 
 , 
  
 'Y' 
 , 
  
 'Z' 
 ])); 
 // Replace existing elements with those from the "other" list by specifying the 
 // "start" position to replace and the "count" of proceeding elements. If 
 // length of "other" list is greater than "count", the remaining "other" 
 // elements are inserted, they do not replace existing elements. 
 print 
 ( 
 'Replace elements' 
 , 
  
 list 
 . 
 splice 
 ( 
 2 
 , 
  
 3 
 , 
  
 [ 
 'X' 
 , 
  
 'Y' 
 , 
  
 'Z' 
 ])); 

 # An ee.List object. 
 ee_list 
 = 
 ee 
 . 
 List 
 ([ 
 0 
 , 
 1 
 , 
 2 
 , 
 3 
 , 
 4 
 ]) 
 print 
 ( 
 'Original list:' 
 , 
 ee_list 
 . 
 getInfo 
 ()) 
 # If "other" argument is None, elements at positions specified by "start" and 
 # "count" are deleted. Here, the 3rd element is removed. 
 print 
 ( 
 'Remove 1 element:' 
 , 
 ee_list 
 . 
 splice 
 ( 
 start 
 = 
 2 
 , 
 count 
 = 
 1 
 , 
 other 
 = 
 None 
 ) 
 . 
 getInfo 
 ()) 
 # If "start" is negative, the position is from the end of the list. 
 print 
 ( 
 'Remove 2nd from last element:' 
 , 
 ee_list 
 . 
 splice 
 ( 
 - 
 2 
 , 
 1 
 ) 
 . 
 getInfo 
 ()) 
 # Deletes 3 elements starting at position 1. 
 print 
 ( 
 'Remove multiple sequential elements:' 
 , 
 ee_list 
 . 
 splice 
 ( 
 1 
 , 
 3 
 ) 
 . 
 getInfo 
 ()) 
 # Insert elements from the "other" list without deleting existing elements 
 # by specifying the insert "start" position and setting "count" to 0. 
 print 
 ( 
 'Insert new elements:' 
 , 
 ee_list 
 . 
 splice 
 ( 
 2 
 , 
 0 
 , 
 [ 
 'X' 
 , 
 'Y' 
 , 
 'Z' 
 ]) 
 . 
 getInfo 
 ()) 
 # Replace existing elements with those from the "other" list by specifying the 
 # "start" position to replace and the "count" of proceeding elements. If 
 # length of "other" list is greater than "count", the remaining "other" 
 # elements are inserted, they do not replace existing elements. 
 print 
 ( 
 'Replace elements:' 
 , 
 ee_list 
 . 
 splice 
 ( 
 2 
 , 
 3 
 , 
 [ 
 'X' 
 , 
 'Y' 
 , 
 'Z' 
 ]) 
 . 
 getInfo 
 ())