odd JS behavior

Posted on Sat 27th, August 2016

• #1

tve

x = {"a":3};
if (x.a) 4; else 5;

run in node.js:

> x = {"a":3};
{ a: 3 }
> if (x.a) 4; else 5;
4
>

run in espruino:

>x = {"a":3};
={ "a": 3 }
>if (x.a) 4; else 5;
=undefined
>

similarly if (x.b) 4; else 5; returns 5 in node.js and undefined in Espruino.

• #2

allObjects

I'm not sure what ECMA defines as 'return' from a statement. That's why some languages by definition return self / this except there is a coded return... a default return allows easy and especially with Espruino very fast cascading of messages sent / methods invoked to the very same object...
• #3

Gordon

Interesting... I honestly wasn't aware that if statements returned anything - so it doesn't surprise me that it's wrong. It should be a pretty easy fix though. I just added a bug for this: https://github.com/espruino/Espruino/issues/909

Post a reply
- Bold
- Italics
- Link
- Image
- List
- Quote
- code
- Preview
Formatting Help

Don't worry about formatting, just type in the text and we'll take care of making sense of it. We will auto-convert links, and if you put asterisks around words we will make them bold.

Tips:

Create headers by underlining text with ==== or ----

To *italicise* text put one asterisk each side of the word

To **bold** text put two asterisks each side of the word

Embed images by entering:
![](https://www.google.co.uk/images/srpr/logo4w.png)
That's the hard one: exclamation, square brackets and then the URL to the image in brackets.

* Create lists by starting lines with asterisks

1. Create numbered lists by starting lines with a number and a dot

> Quote text by starting lines with >

Mention another user by @username

For syntax highlighting, surround the code block with three backticks:

```
Your code goes here
```
Just like Github, a blank line must precede a code block.

If you upload more than 5 files we will display all attachments as thumbnails.

For a full reference visit the Markdown syntax.