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Weird glitch using getAllChecked

I have just switched to the latest professional version of DHTMLX Tree. There is now a weird glitch that occurs every time i call the tree.getAllChecked method. If i choose a full nodes that has 2 children for some reason it returns all of them (the parent and two child) plus some non-existant one, empty entries not seen in the trees separated by commas. Any idea why this would occur ? Thanks for the help

>> it returns all of them (the parent and two child) plus some non-existant one, empty entries not seen in the trees separated by commas

Such a situation can be if the Smart XML Parsing or  the Smart Rendering  mode is enabled - when tree's items are not parsed completely.

You can use following approach to get an array of not empty items:

var arr = tree.getAllChecked().split(",")

var checked_items = [];

for(var i=0; i < arr.length;i++){

    if(arr[i]!="")

        checked_items[checked_items.length] = arr[i];

}