Can a JavaScript object property refer to another property of the same object? [duplicate]

Not with object literals (this has the same value during constructing of the literal that it did before-hand). But you can do var carousel = new (function() { this.$slider = $(‘#carousel1 .slider’); this.panes = this.$slider.children().length; })(); This uses an object created from an anonymous function constructor. Note that $slider and panes are public, so can … Read more

Is it possible only to declare a variable without assigning any value in Python?

Why not just do this: var = None Python is dynamic, so you don’t need to declare things; they exist automatically in the first scope where they’re assigned. So, all you need is a regular old assignment statement as above. This is nice, because you’ll never end up with an uninitialized variable. But be careful … Read more