special characters in id of html tags

Instead of trying for ID using #, try this to match attribute like this,

$('[id=ID]')

$('[id='+ID+']')

so instead of

bidID = "#" + idVal + "bid"

you can try

bidID = "[id=" + idVal + "bid]"

Try escaping it:

$('#abc\\@def.com').val();

First paragraph of http://api.jquery.com/category/selectors/

It looks like JQuery has a useful method for this as of version 3 called escapeSelector.

$('#' + $.escapeSelector(my_id_with_special_chars));

https://api.jquery.com/jQuery.escapeSelector/

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