What problem the Virtual DOM solves?

Consider this scenario there are two couple in house. The girlfriend is the real dom , when couple has Chit-chat and when girlfriend experiences the intense anger and she rearranges the complete home , Back in the day the old-school/collage days before May 29, 2013(without Virtual DOM). The girl says shift the bed shift + furniture shift + curtains change + lighting change. You need to repaint the whole room. After 5 min she said to you , keep them right.

After the complete demolition of the structure of home, you reset all the home settings. Result you understood the problem - time waste and your girlfriend is still angry.

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Virtual DOM, on a path of self-improvement just rearranges the structure , after creating the mini model virtual dom on your mind. You shift the table ,

The rest of the setup is identical, except for the repositioned table.…