https://github.com/browserify/vm-browserify
require('vm') like in node but for the browser
https://github.com/browserify/vm-browserify
Last synced: 4 months ago
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require('vm') like in node but for the browser
- Host: GitHub
- URL: https://github.com/browserify/vm-browserify
- Owner: browserify
- License: mit
- Created: 2012-02-27T06:36:15.000Z (almost 14 years ago)
- Default Branch: master
- Last Pushed: 2024-12-21T09:59:14.000Z (about 1 year ago)
- Last Synced: 2025-10-04T19:54:45.620Z (4 months ago)
- Language: JavaScript
- Homepage:
- Size: 37.1 KB
- Stars: 203
- Watchers: 3
- Forks: 39
- Open Issues: 14
-
Metadata Files:
- Readme: readme.markdown
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Security: security.md
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README
# vm-browserify
emulate node's vm module for the browser
[](https://travis-ci.org/browserify/vm-browserify)
# example
Just write some client-side javascript:
``` js
var vm = require('vm');
window.addEventListener('load', function () {
var res = vm.runInNewContext('a + 5', { a : 100 });
document.querySelector('#res').textContent = res;
});
```
compile it with [browserify](http://github.com/substack/node-browserify):
```
browserify entry.js -o bundle.js
```
then whip up some html:
``` html
result =
```
and when you load the page you should see:
```
result = 105
```
# methods
## vm.runInNewContext(code, context={})
Evaluate some `code` in a new iframe with a `context`.
Contexts are like wrapping your code in a `with()` except slightly less terrible
because the code is sandboxed into a new iframe.
# install
This module is depended upon by browserify, so you should just be able to
`require('vm')` and it will just work. However if you want to use this module
directly you can install it with [npm](http://npmjs.org):
```
npm install vm-browserify
```
# license
MIT