Edit - Stack Overflow

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

Rev

I have noticed I have soem empty string, how would you check for null, empty string or undefined? Like this trackObj.data[c].Deaths != ""

rob.m
– rob.m

2020-03-24 14:45:47 +00:00
Commented Mar 24, 2020 at 14:45
@rob.m the technique in the answer Jack gave is probably better than mine here, where || 0 is added before each value is added to the array.

Pointy
– Pointy

2020-03-24 14:48:21 +00:00
Commented Mar 24, 2020 at 14:48
what if we have one obj like {date: "3/23/20", Confirmed: "", Deaths: "", Recovered: ""} ?

rob.m
– rob.m

2020-03-24 14:52:00 +00:00
Commented Mar 24, 2020 at 14:52
@rob.m the idea is to keep non-numeric values out of the array. That's what the || 0 code does. Now, if there are entries that have non-empty strings that are also not numbers, a different approach would be called for.

Pointy
– Pointy

2020-03-24 15:05:41 +00:00
Commented Mar 24, 2020 at 15:05

Add a comment |

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)

<https://example.com>

[example](https://example.com)

<a href="https://example.com">example</a>

formatting help »
answering help »

Collectives™ on Stack Overflow