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proxytrick.js
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proxytrick.js
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Object.setPrototypeOf(
Number.prototype,
new Proxy(Number.prototype, {
get(_, _end, start) {
// where (start)[_end]
let end = parseInt(_end)
if (isNaN(end)) {
// warning or error
// eventually, fallback
return start
}
// sort behaviour - default ASC
let s = +1
if (start > end) {
// swap
let tmp = start
start = end
end = tmp
// sort behaviour - DESC
s = -1
}
// generate range
return Array(end - start + 1)
.fill()
.map((_, i) => start + i)
.sort(() => s)
},
})
)
let contoh1 = (1)[10]
console.log(contoh1) // print 1-10 [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
let contoh2 = (10)[1]
console.log(contoh2) // print 10-1 [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]