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what is the difference of public and global variable? please make an example. and explain it as simple as possible

New Perspectives on HTML5, CSS3, and JavaScript

6th Edition

ISBN:9781305503922

Author:Patrick M. Carey

Publisher:Patrick M. Carey

Chapter9: Getting Started With Javascript: Creating A Countdown Clock

Section9.3: Visual Overview: Javascript Functions And Expressions

Problem 7QC

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