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# Custom JS Script

Allows you to add a custom JS script to the Block page. This script will run after the default JS scripts.

Default: empty

**Example:**

**`v8.0.0 and up`**

```javascript title="v8.0.0 and up"
table px_configs {
  px_js_ref: 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js',
}
```

**`v7.2.0 and below`**

```javascript title="v7.2.0 and below"
table px_configs {
  JS_REF: 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js',
}
```