What is the difference between jquery .on and ._on

Question

What is the difference between jquery .on and ._on?

When I search the jquery API I only get .on returned. Google also does not return anything helpful. I'm definitely seeing it in code that works though, for example:

$grid._on("click",".gridSave:not(.disabled)", self.saveRow, self); $grid.on("click",".gridSave.disabled", function(){ return false });

._on() doesn't exist in jQuery.fn by default where chainable methods reside so might be custom method. Where did you get that from? Is $grid even a jQuery object? — charlietfl
– charlietfl, Commented Apr 11, 2019 at 18:26

Ramy Moussa · Accepted Answer · 2019-04-11 18:35:26Z

_on comes from jqueryui widget _on while .on comes from normal jquery handler functions

both are basically the same thing, they attach event handlers to an element. an example is when an element is clicked

_on( [suppressDisabledCheck ] [, element ], handlers ) Binds event handlers to the specified element(s). Delegation is supported via selectors inside the event names, e.g., "click .foo".

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