Embodiments of the present invention provide a method, a computer system and its computer program which are for presenting a candidate to be linked with a component when the component is to be linked to another component in a web application. In one embodiment, the method includes the steps of: displaying at least two components on a display device; allowing a user to select at least one tag from tags (first tags) on one component (a first component) of the at least two components; identifying a second component having the same tag as the selected first tag; and presenting the identified second component to the user.