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How to check if parameter is provided to function in JavaScript



125 views
asked May 26, 2022 by avibootz
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1 Answer

0 votes 
function func(parameter) {
    if (typeof parameter !== 'undefined') {
        return parameter;
    }
}

console.log(func(23)); 
console.log(func()); 


   
    
/*
run:
    
23
undefined
    
*/

 



answered May 26, 2022 by avibootz

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