Uncaught TypeError: Cannot read property 'results' of null

Question

My column Jurisdiction is a multichoice column. My program is as below :

for (var index = 0; index < ArrayRetrieved.Jurisdiction.results.length; index++)
    $('#jurisdiction option[value="' + ArrayRetrieved.Jurisdiction.results[index] + '"]').prop('selected', true)
    $("#jurisdiction").trigger("chosen:updated");

I get this error : Uncaught TypeError: Cannot read property 'results' of null. how i can resolve this please?

Answer 1

You need to add a null check before the for loop.

Modify your code as below:

if(ArrayRetrieved.Jurisdiction){ 
    for (var index = 0; index < ArrayRetrieved.Jurisdiction.results.length; index++) 
    $('#jurisdiction option[value="' + ArrayRetrieved.Jurisdiction.results[index] + '"]').prop('selected', true) 
    $("#jurisdiction").trigger("chosen:updated"); 
}