Answers for "javascript check type 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

test if is undefined javascript

let id;

if(typeof id === 'undefined') {
    console.log("id is undefined...");
}

Posted by: Guest on August-10-2020

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