Why my long decimal number is showing as "NaN" in javascript

Question

Take a look at this screenshot:

As you can see, the last index of this array is shown as "0.7713948369012206" in console log.

But when I expend the array in console log, the 8th index is shown as "NaN". It is effecting my code, Why it is not shown as a normal number?

My array is having thousands of object like this:

array = {"abc": [0.7279141471991091, 0.7453059204457335, 0.7978668971106029, 0.6570360524074181, 0.7549066077622528, 0.7268105740052934, 0.7351847097682157, 0.7031287738185653, 0.7713948369012206] , "dsfs": [0.1454351471991091, 0.3054449204457335, 0.9353788971106029, 0.8570360524074181, 0.5549066077622528, 0.7268105740052934, 0.6351847097682157, 0.3031287738185653, 0.3523948369012206]}

Please include Browser name + version and which OS you are using — Peter B, May 25 '18 at 16:22
can you reproduce it in a snippet? copying your array from text will show correctly for us each time.. — Kaddath, May 25 '18 at 16:22
Let me try to reproduce, give me 5 min, my code is long, very long. I need to minimize it, to make it easy to understand. — sdad, May 25 '18 at 16:24
I also tried it in chrome latest version, still same problem. @PeterB — sdad, May 25 '18 at 16:25

score 3 · Accepted Answer · answered May 25 '18 at 16:25

3

Mouse over the small blue i icon in the chrome console and you'll see a tooltip that explains this behavior. The variable is being evaluated when you click the spin-down triangle. The value of the array at index 8 is being changed between when you initially console.log and when you spin-down and inspect the values.

See: Chrome js debug - two different values at the same time

answered May 25 '18 at 16:25

Erty Seidohl

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Yeah, `value was evaluated just now` – sdad May 25 '18 at 16:30
But I am not sure, how that link solve my problem. What should I do? It is not just console.log. When I calculate the max value from array, the code always picks `NaN` was max value. – sdad May 25 '18 at 16:32
Somewhere in your code, after you `console.log` for the first time and the time when you click to spin-down the value, the value is getting set to NaN. – Erty Seidohl May 25 '18 at 16:36
What do you mean by spin-down? – sdad May 25 '18 at 16:41
It's a term I've heard used to describe clicking on the little grey triangle to the left of the console output. – Erty Seidohl May 25 '18 at 16:42
The triangle "spins down" and shows the detailed view. – Erty Seidohl May 25 '18 at 16:42

Why my long decimal number is showing as "NaN" in javascript

1 Answers1