jquery - Why isn't .prop("selected",true) not working when .attr() or .addClass() does? -


I have a script that replaces the box by selecting a box with a set of style divisions, and with it When targeting the user clicks on the "fake" device, I am targeting the selected items like this: 

  targetSelect.eq (optionIndex) .prop ('selected');   
  optionIndex  is the indicator of the selected div because it matches the hidden selection box option.  
 For the above line "Selected" Goal Option I know that I am targeting the right one since  targetSelect.eq (optionIndex) .addClass ('selected');  will add that class and set a selected attribute for  targetSelect.eq (optionIndex) .attr ('selected  
  targetSelect.prop (' selectedIndex ', optionIndex) .  
);   
 But that also does not work.   
 
 
 I believe this should work:  
  $ (' # Selectbox options'). eq (optionIndex) .prop ('selected', true);   
 You can also try (make sure that there is no optionIndex string!):  
  targetSelect.val (optionIndex)  < / Ex>

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