onBeforeSort

fires before sorting of the dataset

Example

view.data.attachEvent("onBeforeSort", function(by, dir, as){
    //... some code here ...
});

Returning false from the event handler will block further processing, and data will not be sorted.

If the third param is a function, the parameters of such a function are the following:

• a (object) - the first data item
• b (object) - the second data item
• prop(string) - the name of the field that the data will be sorted by.

table.sort("#fieldName#", "desc", function(a, b, prop) {
   return a[prop] - b[prop];
})