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Object to pairs
JavaScript, Object, Array · Oct 22, 2020
Creates an array of key-value pair arrays from an object or other iterable.
- Check if
Symbol.iteratoris defined and, if so, useArray.prototype.entries()to get an iterator for the given iterable. - Use
Array.from()to convert the result to an array of key-value pair arrays. - If
Symbol.iteratoris not defined forobj, useObject.entries()instead.
const toPairs = obj =>
obj[Symbol.iterator] instanceof Function && obj.entries instanceof Function
? Array.from(obj.entries())
: Object.entries(obj);toPairs({ a: 1, b: 2 }); // [['a', 1], ['b', 2]]
toPairs([2, 4, 8]); // [[0, 2], [1, 4], [2, 8]]
toPairs('shy'); // [['0', 's'], ['1', 'h'], ['2', 'y']]
toPairs(new Set(['a', 'b', 'c', 'a'])); // [['a', 'a'], ['b', 'b'], ['c', 'c']]More like this
Object to pairs
JavaScript, Object
Creates an array of key-value pair arrays from an object.
Object to entries
JavaScript, Object
Creates an array of key-value pair arrays from an object.
Object from pairs
JavaScript, Object
Creates an object from the given key-value pairs.