In this JavaScript Walkthrough video, we look at how to Avoid Scope Pollution in JavaScript, Avoiding Scope Pollution on our Codecademy Programming Walkthroughs. This lesson is from the Scope section and the name of the lesson is "Scope Pollution". Learning about avoiding scope pollution and best practices to not risk polluting your variable is important for JavaScript developers as well as a programmer who deals with best practices for variable accessibility! We are taught that in JavaScript, any global variables go to the global namespace. This namespace allows our variables to be accessible anywhere in our code. We learn that scope pollution refers to having too many global variables within the global namespace. Also, scope pollution is when we reuse variables in different scopes. Scope pollution will make it difficult to keep track of one's variables! This sets us for potential problems. We are taught that when possible, avoid declaring variables globally!
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