Map Javascript Arrow Function
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Map Javascript Arrow Function
Let us take a look at two examples to understand the difference. Map () takes a function, but here you use the => syntax which is an anonymous function. } can be written as.
It’s unlikely a performance gain here would be meaningful. Map () passes each element of testdata () into this anonymous function. They come in two flavors:
That function (for this example) takes one parameter (here:
With arrow functions the this keyword always represents the object that defined the arrow function. It’s unlikely a performance gain here would be meaningful. An arrow function expression is a compact alternative to a traditional function expression, but is limited and can't be used in all situations. Map () takes a function, but here you use the => syntax which is an anonymous function.
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