What are variables? What are constants? How do they work in javascript? What's let, var and const? It's Friday and as promised I'm doing a young thread on let, var and const. This is by no means comprehensive. A thread...
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To add to this:
var was the original JS syntax whereas let & const were introduced in ECMAScript 6 (ES6) specification in 2015.
This is crucial to know because there are some JS code that were written prior to ES6 and still runs on IE.
#JavaScript #ES6 #ECMAScript
