What are arrow functions?

- You know how, when you create anonymous functions … in JavaScript, so maybe you're creating … a function expression, or you're using a function … inside an event listener or something like that. … You end up writing out a bunch … of code that seems unnecessary. … Case in point, standard function expression. … So here we have the var sumTotal. … Then we create an anonymous function … that grabs the two properties, price and tax. … Then we return, price times tax over 100 plus one. … So that gives us the price plus … whatever tax value on top of that. … And then we console log out sumTotal, six and 12, … so that would give us $6 plus 12% tax is, … like, 7.64, whatever. … So this works fine, but you see … that this function expression here is really clunky. … We have to declare that we have a function. … But this is a throwaway anonymous function. … We're only going to use it once, it doesn't have a name. … And it's captured inside this variable anyway. … So this syntax seems unnecessary, …