Add disabled attribute to input element using Javascript

Question

I have an input box and I want it to be disabled and at the same time hide it to avoid problems when porting my form.

So far I have the following code to hide my input:<

Answer 1

Working code from my sources:

HTML WORLD

...

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JS WORLD

var from = jQuery('select[name=select_from]');

//add disabled
from.attr('disabled', 'disabled');



//remove it
from.removeAttr("disabled");