If you use JQuery you can use the effects for dynamically hide and show html-elements, like boxes and so. But how to test if such a element is currently visible or not? JQuery offers here some selectors, named :hidden and :visible, which can be used. If you combine it with the “is” method, you can easily check the state.
1 2 3 | alert($("p").is(":visible")); $("p").hide(); alert($("p").is(":visible")); |
This code would output “true”, “false” for a normal p-tag.