Event. cancelbubble = true cancel event processing

<Tr> <a href = "XXX"> connection </a> </tr>

In the preceding structure, when you click TR, the page is redirected to another page.

 
<Tr style = "cursor: Pointer" onmouseover = "this. style. backgroundcolor = 'ginsboro' "onmouseout =" this. style. backgroundcolor = ''" onclick = "Return click ();">
 

 

 
Function click () {window. Location. href = "XXX ";}
 

 

<A href = "XXX"> connection </a> can be changed to <a href = "XXX" onclick = "event. cancelbubble = true"> connection </a>

This avoids clicking the label and redirecting to another page. Onclick = "event. cancelbubble = true" cancel event processing.

Otherwise, when you click a, the system will jump to another page.

Resolution:

Cancel event bubbling. In the event mechanism of IE, the trigger event will be uploaded step by step from the child element to the parent element, that is, if the child element triggers the click event, the parent element click event is also triggered. cancelbubble = true; stop the upload

In addition, the IE event is passed from bottom to top:

Event source object-> upper-level object->...-> body-> document-> window

NS event transmission is from top to bottom:

Window-> document-> body->...-> event source object

(Event. returnvalue = false sets the event return value to false, that is, cancel event processing)