watch a variable ?

Posted on Fri 31st, January 2020

• #1

JumJum
Is there a way to have something like setWatch on a variable?
AFAIK, its working for Pins only.
Options comin to my mind are:
- extend setWatch function and watcharray handling in jsiIdle
- use GPIOs which are not wired, sounds crazy, but you never know
• #2

Gordon

There is a way, yes - you can use getters and setters :) Just use Object.defineProperty to create the variable, then add the getter and setter functions that you want... http://www.espruino.com/Reference#l_Object_defineProperty

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.