Returns an array of all first-level HTML element objects contained by the current element. This collection differs from the all[ ] collection in that it contains references only to the immediate children of the current element (whereas the all[ ] collection transcends generations). For example, document.body.children[ ] might contain a form, but no reference to form elements nested inside the form. Items in this array are indexed (zero-based) in source code order. In contrast to the childNodes[ ] array, the scope of this property is the element, not the node. See the children object.