Variable Declarations in JavaScript
This lesson teaches how variables are declared in JavaScript and what's the difference between var, let and const keywords.
Earlier before 2015, the only keyword available to declare variables was the var keyword. With JavaScript ES6 introduced, the two new keywords that came into existence are const and let. Let’s see how each of these keywords differ from one another and what’s the best time to use them.
The different variable declarations with var, let and const can be confusing for newcomers to React even though they are not React specific. Maybe it is because JavaScript ES6 was introduced when React became popular. In general, I try to introduce let and const very early in my workshops. It simply starts with exchanging var with const ...