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In javascript , I have an error in dictionary add and delete

(key:Id,value:Name)

if(Id in addList) {
     alert(alertMsg);
}
else
     addList[Id] = Name;
displayTable(addList);

save is run successfully but in delete

function deleteFromAddList(Id) {
        if(Id in addList)
            delete addList[Id]
        console.log(addList);
        displayTable(addList);
}

It delete only last item which is added in dictionary.

SO, if I add items this order(1,2,3,4,5) when delete button clicked order(5,4,3,2,1)

It is my code to create button dynamically
for(Id in addList)
{
    deleteButton = 'href="javascript:deleteFromAddList(Id)'(skip another html code)
}

there is another method to pass Id into that function?

question from:https://stackoverflow.com/questions/66058322/in-javascript-i-have-an-error-in-dictionary-add-and-delete

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