You're also correct that a named function expression's name is only bound inside … Arrows in Unicode. They have different functions and play different roles. These are the inline arrows function. 1:33. Syntax and usage: This function receives two parameters, … Arrow functions and this. Isn’t the arrow function already an expression by default?! 4.2 Arrow function. and this is the Kyle Simpson's answer: an arrow function is an expr, but we need surrounding parens b/c of "operator precedence" (sorta), so that the final parens to invoke the arrow-IIFE apply to the entire function and not to just the last token of its body. 1:30. 1:26. The typescript handbook currently has nothing on arrow functions. Arrow functions in ES6 allow you to remove some of that syntax along with refining how to handle ‘this’. The first difference between the normal function and arrow function … You can return values from the arrow function the same way as from a regular function, but with one useful exception. So it sounds like a compact alternative, which means that it’s shorter and simpler compared to the traditional function syntax. Differences & Limitations: Does not have its own bindings to this or super, and should not be used as methods. An arrow function expression is a compact alternative to a traditional function expression, but is limited and can't be used in all situations. Rewrite the sum function with arrow function syntax: const sum = (a, b) => { return a + b } Like traditional function expressions, arrow functions are not hoisted, and so you cannot call them before you declare them. Yep, you got it. In classic function expressions, the this keyword is bound to different values based on the context in which the function is called. I was about to dispute you @slebetman on technicality, since this is a (arrow) function expression and you end up with a named function (ie foo.name === 'foo').But only because it's in the initializer of a const *statement*—meaning it's not quite right to call this a "named async arrow function expression". converting this function declaration to an arrow function expression, 1:23. is almost exactly the same as our first example, except for one difference. If you want to understand why you can’t invoke an arrow function by putting parentheses immediately after it, you have to examine how expression bodies work: parentheses after an expression body should be part of the expression… There are more than 600 arrows in Unicode. 13.6.3 Parenthesizing arrow function with expression bodies #. An arrow function looks similar to a function expression — it’s just shorter. An arrow function expression is an anonymous function expression written with the “fat arrow” syntax (=>). 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