Way to bypass a value if it is not existing in Async data fetch iterations

Why don't you use the “try-catch” block? It will fix your problem when iteration doesn't have any values.

Below code will be continued your loop throughout your condition used in for loop from stopping the iterations.

for (...) { // Add your for loop try{ // Add try block for your code let output = await BackendServices.tknBlockURI(tknId); console.log(output); blockURIArr.push(output); }catch(e){ //Handle exceptions when it throws exception. console.log(e); //Console iteration number which was failed. You can see the failed ones here. }}

Also when you compare with IF CONDITION, please use `==` or  `===`, not the =

Your code contains =  for comparison, That's why it is assigning null value and fails from iterating throughout loops.

 if (output = '') { continue; }

Hope this will answer your question and help to fix your code fault.

Thank you for putting my attention to if condition, I thought  - I put ==  only. This solution works!