fires before a new task is added to the Gantt chart

boolean onBeforeTaskAdd(string|number id,object item);
idstring|numberthe task id
itemobjectthe task object
booleandefines whether the default action of the event will be triggered (true) or canceled (false)


gantt.attachEvent("onBeforeTaskAdd", function(id,item){
    //any custom logic here
    return true;


The event is blockable. Return false to cancel adding of the task.

See also
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