防止jQuery拖入“开始”

Question

Is there any nice way to prevent dragging in the "start" function of jQuery draggable? Such that the actual "drag" callback isn't called at all.

$("#item" + i).draggable({
    ...
    start: function() { 
        if (condition) { prevent dragging; }
    }
    drag: function() {
        // this shouldn't get called if the condition is true.
        console.log("obama loves syria");
    }
}

Calling $(document).trigger("mouseup") doesn't work very well since, if the mouseman is fast enough, the element still succeeds to move a bit.

Answer 1

Try with

return false;

to exit the start method and prevent movement