Mastering the art of pre-scrolling to a specific position upon page load with jQuery Kinetic

I have implemented jQuery.kinetic to enable scrolling of a div within its parent div through mouse dragging, similar to the demo on the author's website. When the page initially loads, the inner div aligns with the upper left corner of the parent div, implying it is scrolled up and to the left as much as possible. This is how it appears:

https://i.sstatic.net/4wPe3.png

However, I wish to pre-scroll upon loading the page so that the inner div is approximately centered. Here is an illustration of what I intend:

https://i.sstatic.net/ml13n.png

The documentation does not mention a way to specify the starting position for the inner div. Nevertheless, it seems like the jQuery.kinetic author has provided a method to extend the plugin beyond its default functionality using this code snippet:

$.Kinetic.prototype.newFeature = function(options){
   // define the task
};

This extended functionality can be invoked in this manner:

// use the method
$('#elem').kinetic('newFeature', { options });

Am I overlooking a method to set a position during page load? If not, how can I enhance the plugin to achieve my desired behavior?

Thank you!

Answer №1

After extensive exploration, I finally discovered that the Kinetic plugin comes equipped with a feature for manually scrolling the container. Surprisingly, this functionality is not outlined in the official documentation. However, upon delving into the plugin code, I uncovered methods that allow for precise control over the scroll position along the x and y axes.

Within the file jquery.kinetic.js, specifically from lines 458 to 475 (as of now), you can find the scrollLeft and scrollTop methods defined. Link to Code

To leverage these capabilities on an existing Kinetic instance within a container, simply execute the following commands:

$("container-selector").kinetic("scrollLeft", 50);
$("container-selector").kinetic("scrollTop", 480);

Exploring the inner workings of the Kinetic codebase is highly recommended to unlock its full potential and discover additional functionalities beyond what is explicitly documented.

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