TIL a code snippet to check if the value is of type
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TAGS: javascript gist
Checks if the provided value is of the specified type.
This short snippet lets us do a quick test!
const is = (type, val) => ![,null].includes(val) && val.constructor === type;
// examples
is(Array, [1]); // true
is(ArrayBuffer, new ArrayBuffer()); // true
is(Map, new Map()); // true
is(RegExp, /./g); // true
is(Set, new Set()); // true
is(WeakMap, new WeakMap()); // true
is(WeakSet, new WeakSet()); // true
is(String, ''); // true
is(String, new String('')); // true
is(Number, 1); // true
is(Number, new Number(1)); // true
is(Boolean, true); // true
is(Boolean, new Boolean(true)); // trueRelated TILs
Tagged: javascript