Javascript check if undefined
if (typeof myVariable === 'undefined'){
//myVariable is undefined
}
Javascript check if undefined
if (typeof myVariable === 'undefined'){
//myVariable is undefined
}
javascript if undefined
if(typeof comment === 'undefined') {
alert('Variable "comment" is undefined.');
} else if(comment === null){
alert('Variable "comment" is null.');
}
test undefined js
if (t === undefined) {
return 'Undefined value!';
}
undefined javascript check
if(undefinedElement === null) {
console.log("Element is undefined");
}
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