What if I want to change another parameter?
Should I each time extend this function?

Why not?
```javascript
 if (_.isObject(params)) {
        $('#example')
            .find('#video_id')
            .data(params);
    }
```
where `params` is a dictionary with parameters that should be applied:
```javascript
{
   'start': 1,
   'end': 3
}
```