History

创建源

描述

You can refer to the history entries by using the Window.history array. This array contains an entry for each history entry in source order. Each array entry is a string containing a URL. For example, if the history list contains three named entries, these entries are reflected as history[0], history[1], and history[2].

If you access the history array without specifying an array element, the browser returns a string of HTML which displays a 表 of URLs, each of which is a link.

属性概览

方法概览

示例

history.go(-3) 示例 2. You can use the history object with a specific window or frame. The following example causes window2 to go back one item in its window (or session) history:

window2.history.back() 示例 3. The following example causes the second frame in a frameset to go back one item:

parent.frames[1].history.back() 示例 4. The following example causes the frame named frame1 in a frameset to go back one item:

parent.frame1.history.back() 示例 5. The following example causes the frame named frame2 in window2 to go back one item:

window2.frame2.history.back() 示例 6. The following code determines whether the first entry in the history array contains the string "NETSCAPE". If it does, the function myFunction is called.

if (history[0].indexOf("NETSCAPE") != -1) {
   myFunction(history[0])
} 示例 7. The following example displays the entire history list:

document.writeln("<B>history is</B> " + history) This code displays output similar to the following:

history is
Welcome to Netscape http://home.netscape.com/
Sun Microsystems http://www.sun.com/
Royal Airways http://www.supernet.net/~dugbrown/

参看

属性

安全性

Navigator 4.0: Getting the value of this property requires the UniversalBrowserRead privilege. It has no value if you do not have this privilege. 要获取 Navigator 4.0 中关于安全性更多的信息，请看“JavaScript 指南”中的第七章“JavaScript 安全性”。

示例

if (history.current.indexOf("netscape.com") != -1) {
   myFunction(history.current)
}

参看

length

安全性

next

安全性

Navigator 4.0: Getting the value of this property requires the UniversalBrowserRead privilege. It has no value if you do not have this privilege. 要获取 Navigator 4.0 中关于安全性更多的信息，请看“JavaScript 指南”中的第七章“JavaScript 安全性”。

描述

示例

if (history.next.indexOf("NETSCAPE.COM") != -1) {
   myFunction(history.next)
}

参看

previous

安全性

Navigator 4.0: Getting the value of this property requires the UniversalBrowserRead privilege. It has no value if you do not have this privilege. 要获取 Navigator 4.0 中关于安全性更多的信息，请看“JavaScript 指南”中的第七章“JavaScript 安全性”。

描述

示例

if (history.previous.indexOf("NETSCAPE.COM") != -1) {
   myFunction(history.previous)
}

参看

方法

语法

描述

示例

<P><INPUT TYPE="button" VALUE="< Go Back"
   onClick="history.back()">
<P><INPUT TYPE="button" VALUE="> Go Back"
   onClick="myWindow.back()">

参看

forward

语法

描述

示例

<P><INPUT TYPE="button" VALUE="< Forward"
   onClick="history.forward()">
<P><INPUT TYPE="button" VALUE="> Forward"
   onClick="myWindow.forward()">

参看

go

语法

描述

If the delta argument is 0, the browser reloads the current page. If it is an integer greater than 0, the go method loads the URL that is that number of entries forward in the history list; otherwise, it loads the URL that is that number of entries backward in the history list.

The location argument is a string. Use location to load the nearest history entry whose URL contains location as a substring. Matching the URL to the location parameter is case-insensitive. Each section of a URL contains different information. See Location for a描述 of the URL components.

The go method creates a new entry in the history list. To load a URL without creating an entry in the history list, use Location.replace.

示例

<P><INPUT TYPE="button" VALUE="Go"
   onClick="history.go('home.netscape.com')"> The following button navigates to the URL that is three entries backward in the history list:

<P><INPUT TYPE="button" VALUE="Go"
   onClick="history.go(-3)">

参看