checking if var is not defined js
if(typeof x !== 'undefined'){
alert("Variable x is defined.");
}checking if var is not defined js
if(typeof x !== 'undefined'){
alert("Variable x is defined.");
}not defined javascript
/* Means something was not defined for example you wanted to print */ "X"
/* but X is not defined to defined you have to make a variable for it */
X = "Something" /* Once you define it it'll print the value successfully */Copyright © 2021 Codeinu
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