onEditCell

fires 1-3 times depending on cell's editability (see the stage parameter)

stage	number	the stage of editing (0-before start; can be canceled if return false,1 - the editor is opened,2- the editor is closed)
rId	string|number	the id of a row
cInd	number	the index of a cell
nValue	number	a new value (only for the stage 2)
oValue	number	an old value (only for the stage 2)

mixed

true - editing is confirmed, false - editing is canceled; or a new value of the cell

Available only in PRO Edition

Example

grid.attachEvent("onEditCell", function(stage,rId,cInd,nValue,oValue){
    // your code here
});

the event is commonly used for validation

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