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How to find the index of NaN in array with JavaScript ES6



145 views
asked Mar 11, 2020 by avibootz
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1 Answer

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const arr = ['w', 23, 'node.js', NaN];

console.log(arr.findIndex(x => Number.isNaN(x))); 



/*
run:
     
3
   
*/

 



answered Mar 11, 2020 by avibootz

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