forEach()
iterates over all items of a tree collection
forEach(callback: DataCallback<T>, parentID?: string | number, level?: number): void;
Parameters:
callback: function
- a function that will iterate over items of a tree collectionparentID: string | number
- optional, the parent id. If not specified, the function will start iterating over from the root item.level: number
- optional, the number of levels to be iterated over. If not specified, each nested level will be visited.
Example
component.data.forEach(function(element, index, array) {
console.log("This is an item of treeCollection: ", element);
console.log("This is an index of the element: ", index);
console.log("This is an array of the elements: ", array);
});
The callback function takes three parameters:
element | (object) the object of an item of a tree collection |
index | (number) the index of an item |
array | (array) an array with items |
Change log:
added in v6.4