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# html.scriptLoading
- **Type:** `'defer' | 'blocking' | 'module'`
- **Default:** `'defer'`
Specifies how `
```
:::tip
When the browser encounters a `
```
### blocking
Setting `scriptLoading` to `blocking` will remove the `defer` attribute, and the script is executed synchronously, which means it will block the browser's parsing and rendering process until the script file is downloaded and executed.
```ts title="rsbuild.config.ts"
export default {
html: {
inject: 'body',
scriptLoading: 'blocking',
},
};
```
When you need to set `blocking`, it is recommended to set [html.inject](/config/html/inject.md) to `'body'` to avoid page rendering being blocked.
```html
```