javascript check if not undefined
if (typeof myVar !== "undefined") {
console.log("myVar is DEFINED");
}javascript check if not undefined
if (typeof myVar !== "undefined") {
console.log("myVar is DEFINED");
}Javascript check if undefined
if (typeof myVariable === 'undefined'){
//myVariable is undefined
}test if is undefined javascript
let id;
if(typeof id === 'undefined') {
console.log("id is undefined...");
}check either define or undefined in javascript
if (typeof variable !== 'undefined' || typeof variable ==='undefined') {
//the variable is either defined or not defined
//in both conditions the code will be executed
}Copyright © 2021 Codeinu
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