JavaScript ? ??
History ??
JavaScript History ??? ?? ?? ????? ?? ??? ???? ? ?????. History ??? window ??? ???? window.history ??? ?? ???? ? ????.
?: History ??? ?? ??? ?? ?? ?????.
History ?? ?? ??
History ???? ???? ??? ???? URL ?? ???? ? ???? ??? ?? ??? ????. ?? ??? ????.
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>php中文網(wǎng)(php.cn)</title> <script type="text/javascript"> document.write(history.length); </script> </head> <body> </body> </html>
Explanation
? ?? ?? ??? ?? ???? ?? ??? ?? ????. ?? ? ??? ??? IE ????? 0? ?????(?, 0?? ??), ?? Firefox, Chrome ????? 1? ?????.
back() ???
back() ???? ?? ?? ???? ???? ? ?????(???? ??). ? ??? ????? ?? ??? ????? History.go(-1)? ???? ?? ????. . ??? ?? ???? ??? ? ????? ???? ????.
<a href="javascript:window.history.back()" />?? ???? ????</a>
<html>
<head>
<script>
function goBack()
{
window.history.back()
}
</script>
</head>
<body>
<input type="button" value="Back" onclick="goBack()">
</body>
</html>
forward() ???
back() ???? ?? ?? ???? ???? ? ?????(???? ??). ? ??? ????? ??? ??? ????? History.go(1)? ???? ?? ????. ?:
<a href="javascript:window.history.forward()" />?? ???? ??</a>
<html>
<head>
<script>
function goForward()
{
window.history.forward()
}
</script>
</head>
<body>
<input type="button" value="Forward" onclick="goForward()">
</body>
</html>Note: back ???? Forward ????? ??? ?????. ???? ????? ???? ??? ? ????.
