How To Hide NaN (JavaScript)

I'm learning loops in JavaScript and I'd like to get how to hide all text strings from output. When alert of skipping was inside @for operator there was no NaN values in output, b

Solution 1:

In your for loop you can skip strings using typeof:

for (loopCounter = 0; loopCounter <=6; loopCounter++)
  {   
   if (typeof(degCent[loopCounter]) != 'number') continue;

   // Calc degCent via function
   degCent[loopCounter] = convertToCentigrade(degFahren[loopCounter]);


   document.write ("Value " + loopCounter + " was " + degFahren[loopCounter] + " degrees Fahrenheit");
   document.write (" which is " + degCent[loopCounter] +  " degrees centigrade<br />");

  }

Solution 2:

You can use if(parseInt(degCent[loopCounter]) != 'NaN') {}

or

if (typeof(degFahren[loopCounter]) != 'number')

To skip the strings