The every() method tests whether all records in the grid pass the test implemented by the provided function.
- Callback function that receives the following arguments:
- Record object with properties for each field in the grid
- Index - the zero-based index of the current grid record being processed
- Records array - array representing all of the grid records
The function must return true when the test condition is met.
Returns true if the callback function returns a true value for every grid record; otherwise, false.