Code
< Html >
< Body >
< P > One advantage is that I want some objects in the body (or other elements) to respond to events without writing them one by one.
You only need to write one on the outer layer and check whether event. srcelement. tagname or other attributes are what you want to determine whether to respond to the event. However, it seems that event. srcelement does not work in ff. </ P >
< P > For example </ P >
< P >
< Input Value = "Input" >
< BR >
< Span > Span </ Span > </ P >
< Div > Div </ Div >
< P > Event object refers to the currently triggered event object, and window. event. srcelement refers to the object that triggers the event. For example, you set document. onclick = myfunc; at this time, all the page Click events are handed over to myfunc for processing. In the myfunc function, you can write vsrc = Window. event. srcelement, know where the user clicked, and perform corresponding processing.
Add the following section to an HTML file: </ P >
< P >
< Textarea Rows = "10" Cols = "90" >
< Script Languange = "JavaScript" >
Document. onclick = Myfunc;
Function Myfunc ()
{
Alert (window. event. srcelement. tagname );
}
</ Script >
</ Textarea >
< Script Languange = "JavaScript" >
Document. onclick = Myfunc;
Function Myfunc ()
{
Alert (window. event. srcelement. tagname );
}
</ Script >
</ P >
< P > Try it. < A Href = # > Void (0) is a function that does nothing. </ A >
</ P >
</ Body >