Here the simplest way of selecting random rows from the MySQL database with using "ORDER BY RAND()" clause in the query.

This will remove the items in a select box/list box that have been selected.

For some reason setting a default value for select elements does not work. This one line of jquery solves that problem. Assign a value (value="something") to the select tag that is to be the default value. With jquery get all select elements with a (value) attribute set. For some reason I couldnt get the value of (value) with jquery, it would only return the first item in the list and not the value of the attribute(value). Oldschool Javascript managed to return it though. The result is that when the document becomes ready jquery finds all select boxes and changes their value to the value stored in the attribute(value) of the select tag. This means that you can set default values for select elements in the same way you set them for other elements - by assigning them a (value) - value="whatever"

select all object that intersect each other

Select last created object using "getNodeByHandle" fn

Select con options de tipos de vía.

Selectors are ARRAYs ... so you should do something like this $('div.a')[0] == $('div#a')[0]

or use the bellow method

With the current combobox implementation, the full list is emptied and re-rendered every time you expand the dropdown. Also you are stuck with setting the minLength to 0, because it has to do an empty search to get the full list.

Here is my own implementation extending the autocomplete widget. It renders the full list just once, and reuses it whenever the dropdown button is clicked. This also removes the dependence of the option minLength = 0. It also works with arrays, and ajax as list source. Also if you have multiple large list, the widget initialization is added to a queue so it can run in the background, and not freeze the browser.

Simple solution found via link. Just edit code from demo page(s). Also http://uniformjs.com/

validar limite de elementos seleccionados en select multiple

dynamically selects a value in a select according to what's already in the DB

This snippet describes how to fill select html element with Text, Value pairs where 'Text' is displayed to the user and 'Value' is actual value to be processed.

Little snippet, which helps to use custom colored selections. All you need is to setup the right style and use this snippet!