In ES5, we only had one type of variable, var, but in ES6, we have three. types of variables: var, let and const. In this video, we explore the what, why, and how of var, let and const, and I also do a little lecture on the value of minimising mutable state.
► 14:14 Minimize mutable state when programming
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– Semicolons cannot save you! (Another funfunfunction video)