Use document. referrer to determine whether the page is a link adjustment, a new one, or a new source.

Use document. referrer to determine whether the page is a link adjustment, a new one, or a new source.

Business Requirements:

1. Copy the link or a new link in the QQ browser and click "back" to go to the List page;

2. The store "return" adjusted from the list Page Link executes the "return" action of the browser. The advantage is that it can be directly located at the last browsing position on the list page.

Function ClickBack () {if (document. referrer = "" | document. referrer. indexOf ("cases") =-1) {// return to the case list window. location. href = '/cases/';} else {history. back ();}}

If the value of document. referrer on the newly opened page is "",

Compatibility test:

Operation	IE6	IE7	IE8	IE9	Firefox	Chrome	Opera	Safari
Enter the URL directly in the address bar	""	""	""	""	""	""	""	""
Access URL from bookmarks	""	""	""	""	""	""	""	""
Click the hyperlink from page a to jump to page B (target = "_ self ")	√	√	√	√	√	√	√	√
Click the hyperlink from page a to jump to page B (target = "_ blank ")	√	√	√	√	√	√	√	√
Right-click the hyperlink from page A and open page B on the new tab.	-	√	√	√	√	√	√	""
Right-click the hyperlink from page A and open page B in A new window	√	√	√	√	√	√	√	""
Drag to the address bar	""	Cannot be dragged	Cannot be dragged	""	""	""	""	""
Drag to the tab bar	-	""	""	""	""	""	""	""
Use the browser's forward and backward buttons	√	√	√	√	√	√	√	√
Modify location. href in JS	""	""	""	√	√	√	√	√
JS uses window. open	""	""	""	""	√	√	√	√
Server redirection (302 redirection)	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages
Page Meta Refresh	""	""	""	""	""	Turn page	Turn page	Turn page

In the above table, "√" indicates that the referrer can be obtained normally. "" indicates that the referrer is empty.

The test result is from the network. The author is not familiar with it. Thank you for sharing it.

Operation	IE6	IE7	IE8	IE9	Firefox	Chrome	Opera	Safari
Enter the URL directly in the address bar	""	""	""	""	""	""	""	""
Access URL from bookmarks	""	""	""	""	""	""	""	""
Click the hyperlink from page a to jump to page B (target = "_ self ")	√	√	√	√	√	√	√	√
Click the hyperlink from page a to jump to page B (target = "_ blank ")	√	√	√	√	√	√	√	√
Right-click the hyperlink from page A and open page B on the new tab.	-	√	√	√	√	√	√	""
Right-click the hyperlink from page A and open page B in A new window	√	√	√	√	√	√	√	""
Drag to the address bar	""	Cannot be dragged	Cannot be dragged	""	""	""	""	""
Drag to the tab bar	-	""	""	""	""	""	""	""
Use the browser's forward and backward buttons	√	√	√	√	√	√	√	√
Modify location. href in JS	""	""	""	√	√	√	√	√
JS uses window. open	""	""	""	""	√	√	√	√
Server redirection (302 redirection)	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages	Targeting previous pages
Page Meta Refresh	""	""	""	""	""	Turn page	Turn page	Turn page

In the above table, "√" indicates that the referrer can be obtained normally. "" indicates that the referrer is empty.