Because of the previous understanding of JavaScript is not deep enough, a time of unprepared.
Later, after two master colleagues of the guidance (to the two colleagues of admiration like the surging river endless ... ), suddenly enlightened
The addition of this feature was successfully completed.
Let's start by introducing some of the objects and methods of this feature in javascript:
1. Window.event objects:
An event represents the state of an incident, such as the element that triggers the events object, the position and state of the mouse, the pressed key, and so on.
The event object is valid only if it occurs.
2. Event.srcelement:
Indicates the source of the event the popular point is that where the event is triggered
3. Srcelement.parentnode:
The parent node that represents the source of the occurrence of the event
4. Srcelement.tagname:
Label name that represents the source of the event occurrence
5. toUpperCase ():
How to capitalize the corresponding string
Basically these are the properties and methods that may be unfamiliar to friends who have just been in touch with JavaScript, or friends who used to use them very infrequently, but it doesn't matter, it's not hard to find out later, and the JavaScript validation form isn't much different.
The following on the combination of procedures to give you step-by-step explanation (procedures unavoidably have unreasonable place, I hope everyone will correct, common progress):
The first part: JavaScript record browsing action.
Copy Code code as follows:
function Glog (EVT)//define functions to record mouse click action
{
Evt=evt?evt:window.event;var srcelem= (evt.target)? evt.target:evt.srcElement;
Try
{
while (Srcelem.parentnode&&srcelem!=srcelem.parentnode)
The above statement determines whether the mouse action occurs in a valid area and prevents the user from being logged invalid clicks
{
if (srcelem.tagname&&srcelem.tagname.touppercase () = = "A")//Determine whether the object clicked by the user belongs to the link
{
linkname=srcelem.innerhtml; Remove the name of the event occurrence source, which is the text between <a> and <a/>, which is the name of the link.
address=srcelem.href+ "_www.achome.cn_"; Remove the href value of the event occurrence source, which is the address of the link
Wlink=linkname+ "+" +address; Consolidate the link name and link address into a variable
Old_info=getcookie ("History_info"); Retrieve history of previous records from cookies, which has a declaration
The following procedure begins to determine whether the new browsing action duplicates the previous 6 history and writes cookies if not repeated
var insert=true;
if (old_info==null)//To determine whether the cookie is empty
{
Insert=true;
}
Else
{
var old_link=old_info.split ("_www.achome.cn_");
for (Var j=0;j<=5;j++)
{
if (Old_link[j].indexof (linkname)!=-1)
Insert=false;
if (old_link[j]== "null")
Break
}
}
if (insert)
{
Wlink+=getcookie ("History_info");
Setcookie ("History_info", wlink); Write Cookie, which has a declaration behind it
History_show (). reload ();
Break
}
}
Srcelem = Srcelem.parentnode;
}
}
catch (e) {}
return true;
}
document.onclick=glog;//makes every click of the page perform the Glog function
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