Question

I want to create a custom control that have the same behavior as what Google+ and Facebook’s textbox have. The one that looks like it have child html elemens.

Please look at the following images:

Answer 1

You would need to position the elements using css. Wrap the input and the other element which you want inside the input inside an element, set its position:relative;, then define the element you want inside the input with position:absolute and set its top and left properties to 0 or some other value which fits your purpose.

example: http://jsfiddle.net/niklasvh/eZAU6/