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July 16, 2020 13:52
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Simplest object iterator (make object spreadable in console :) )
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1. Any object | |
var obj = { | |
some: 'thing', | |
any: 'key', | |
'1': 'first' | |
} | |
obj[Symbol.iterator] = function* objectIterator() { | |
for (k in this) { | |
yield this[k]; | |
} | |
} | |
console.log([...obj]); // ["first", "thing", "key"] | |
2. Nummeric | |
var obj = { | |
'0': 'zero', | |
'1': 'first', | |
'2': 'second', | |
'3': 'third', | |
length: 4 | |
}; | |
obj[Symbol.iterator] = function* objectIterator() { | |
for (let index = 0; index < (this.length || 0); index++) { | |
yield this[index]; | |
} | |
} | |
console.log([...obj]); // ["zero", "first", "second", "third"] |
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