The elements contained within this listbox can be manipulated by the right type of JavaScript code. For example, if you want to count the total number of selected elements in the listbox at any ...

Here's what beginning and experienced developers need to know about working with JavaScript ... array, it becomes the index. This can then be used to access the object or array properties and ...

The Java array’s length property does not return the number of non-null elements in the array. The Java array length represents the array’s total potential size, not just the number of elements that ...