# Execute JavaScript code from a plugin once after load
**URL:** https://meta.discourse.org/t/execute-javascript-code-from-a-plugin-once-after-load/85580
**Category:** Development
**Created:** [April 17, 2018, 10:04pm UTC](https://meta.discourse.org/t/execute-javascript-code-from-a-plugin-once-after-load/85580 "2018-04-17T22:04:22Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@eatcodetravel](https://meta.discourse.org/u/eatcodetravel)
#### Post date: [April 17, 2018, 10:04pm UTC](https://meta.discourse.org/t/execute-javascript-code-from-a-plugin-once-after-load/85580/1 "2018-04-17T22:04:22Z")
Hello!,
I’m looking a way to execute JavaScript code after Discourse has finished loading. I’m using the following approach as I’ve seen it some plugins.
```js
// Inside an initializer
export default {
name: 'my-initializer',
initialize(container) {
withPluginApi('0.8.9', api => {
api.modifyClass('component:site-header', {
@on('didInsertElement')
myInitializer() {
Ember.run.scheduleOnce('afterRender', () => {
// my code here
});
},
});
});
},
};
```
Is there a way to do specifically this, without hooking to the site-header component lifecycle? Like a `window.onload` but for Discourse.
Thanks!
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### Author:  [@riking](https://meta.discourse.org/u/riking)
#### Post date: [April 18, 2018, 12:05am UTC](https://meta.discourse.org/t/execute-javascript-code-from-a-plugin-once-after-load/85580/2 "2018-04-18T00:05:24Z")
Well, they’re hooking into the `site-header` because those plugins need to modify the header 🙂
Can you be a little more specific about what this code needs to do?
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### Author:  [@eatcodetravel](https://meta.discourse.org/u/eatcodetravel)
#### Post date: [April 18, 2018, 12:07am UTC](https://meta.discourse.org/t/execute-javascript-code-from-a-plugin-once-after-load/85580/3 "2018-04-18T00:07:15Z")
Render a modal conditionally given some user custom\_fields. The work is related to this [Force password change after login - #5 by riking](https://meta.discourse.org/t/force-password-change-after-login/85202/5)
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### Author:  [@riking](https://meta.discourse.org/u/riking)
#### Post date: [April 18, 2018, 12:08am UTC](https://meta.discourse.org/t/execute-javascript-code-from-a-plugin-once-after-load/85580/4 "2018-04-18T00:08:00Z")
In that case, you can probably stick the code in ` ` in a theme component. The base classes e.g. `Discourse.User.current()` exist and are loaded at that point.
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