Answers for "es6 check if boolean or undefined"

how to check if object is undefined in javascript

if (typeof something === "undefined") {
    alert("something is undefined");
}

Posted by: Guest on November-26-2019

javascript check if boolean is undefined

if (typeof myFlag !== "undefined") {
  // comes here whether myFlag is true or false but not defined
}

Posted by: Guest on May-02-2020

Code answers related to "es6 check if boolean or undefined"