Definition 4: This value: in JavaScript this value is dynamically scoped, unless used in an arrow function.
That’s correct: as we know, the value of this is determined and provided exactly by the caller.
function produce() {
console.log(this.x);
}
const alpha = {produce, x: 1};
const beta = {produce, x: 2};
const gamma = {produce, x: 3};
console.log(
alpha.produce(), // 1
beta.produce(), // 2
gamma.produce(), // 3
);
instead of calling a function directly, the dyncall library provides a mechanism to push the function parameters manually and to issue the call afterwards.
I was working on an university project with some course mates when I had this conversation. My course mate said: “I don’t understand this design with APIs; why don’t we just make life easier for them…
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