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How to determine if variable name is defined in JavaScript

1 Answer

0 votes
let y = 82;
if (typeof x !== 'undefined') {
    console.log("x=" + x);
}
if (typeof y !== 'undefined') {
    console.log("y=" + y);
}


   
/*
run:
       
y=82
 
*/

 



answered Jun 3, 2025 by avibootz

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