https://github.com/gigabyte5671/variablelistener

A library enabling JavaScript to execute arbitrary functions when the value of any global variable changes.
https://github.com/gigabyte5671/variablelistener

javascript javascript-library listener variables

Last synced: 5 days ago
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A library enabling JavaScript to execute arbitrary functions when the value of any global variable changes.

• Host: GitHub
• URL: https://github.com/gigabyte5671/variablelistener
• Owner: Gigabyte5671
• Created: 2022-02-06T02:36:49.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-05-28T03:43:38.000Z (over 1 year ago)
• Last Synced: 2024-03-15T15:22:59.458Z (8 months ago)
• Topics: javascript, javascript-library, listener, variables
• Language: JavaScript
• Homepage: https://www.npmjs.com/package/variable-listener
• Size: 20.5 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Variable Listener

Allows JavaScript to execute arbitrary functions when the value of any global variable changes.

![npm bundle size](https://img.shields.io/bundlephobia/min/variable-listener)

## Installation

To add Variable Listener to your site or project:

```html

```

or

```bash

npm install variable-listener

```

```javascript

import 'variable-listener';

```

## Usage

Declare your global variable:

```javascript

var count = 10;

```

Add a new listener:

``` javascript

window.addVariableListener('count', function (newValue) {

    console.log(newValue);

});

```

The callback will be triggered whenever your variable changes:

```javascript

count++;

// Callback logs: 11

```

If you no longer want to listen to the variable, call:

``` javascript

window.removeVariableListener('count');

```