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
}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
}undefined javascript check
if(undefinedElement === null) {
console.log("Element is undefined");
}Copyright © 2021 Codeinu
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