Function isNumberObject

codebase/sources/dhtmlxscheduler.es.js:1445–1447

(obj)

  return obj && typeof obj === "object" && Function.prototype.toString.call(obj.constructor) === "function String() { [native code] }";
}
function isNumberObject(obj) {
  return obj && typeof obj === "object" && Function.prototype.toString.call(obj.constructor) === "function Number() { [native code] }";
}
function isBooleanObject(obj) {
  return obj && typeof obj === "object" && Function.prototype.toString.call(obj.constructor) === "function Boolean() { [native code] }";
}