Hi,

I have a scenario, where on page load, I have to disable Save button & 
Button will be enabled only when there is some change in form(DOM).
Here one case is also that after making changes if we revert the changes 
then button should be disabled.
I want to make a watch on Form(DOM).

Here My question is how to make a watch on Form data.
How to store Firm initial data.
How to compare old data with new data(After any changes) to show button 
enabled.



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