Jquery And Regular Expressions,Trick #1:- Selecting all the tags matching some string or having a particular string in its id or classname. This trick will come very handy for the server controls which sometimes emit their own id's while rendering the equivalent HTML.Most of the server controls append the id of their parent server control container. So while working with asp.net it becomes a tedious task to catch all those id's which are different from their actual id's which we gave using the 'id' attribute. This is one of the ugliest thing of WebForms and also this can be treated as a disadvantage while using webforms because we donot have direct id's as given while we were writing the code, i.e what we gave is not what we recieve. And this is one of the advantage of using MVC framework as it gives more control on the rendered HTML. So here we assume a situation in where we are not using MVC, we are only using webforms and in our case there is a situation where in we have widgets which are user controls and are created dynamically as soon as they are dropped.These widgets when rendered are enclosed inside a div having an id="widget123333444asdfdf" i.e in the id there is a word widget which is fixed and is inherited and rendered by every widget but after the widget word another random guid value is appended which probably might be the id of widget.