html下拉Java脚本代码 [英] html dropdown java script code

问题描述

我正在使用html下拉列表.页面刷新后，html dropdownlist不会保留所选的值.我正在使用以下代码:

I am using html dropdown. html dropdownlist is not retaining the selected value after the page refresh. I am using the code below:

<select  önchange="window.open(this.options[this.selectedIndex].value,'_top')">
<option value="http://xyz.com ">A</option>
<option value=" ">B</option>
<option value="">C</option>

我可以将页面重定向到同一窗口中提到的值.但是下拉值并不会在刷新时保留所选的值.
例如:如果我从下拉菜单中选择B项目，则在重定向到B选项值后，它必须在下拉菜单中显示B.

任何人都可以让我知道javascript的上述代码.

感谢

I could redirect to the page in same window to the value mentioned. But dropdown value is not retaining the selected value on refresh.
For Ex: if i select B item from dropdown it has to display B in dropdown after redirecting to B option value.

Can any one please let me know javascript for the above code.

thanks

推荐答案

对于每个页面刷新，除非您使用cookie或hiddenvariable或viewstate记住它们，否则将重置这些值.请参考下面的链接以记住以前的状态.刷新时的页面.


http://homepages.ius.edu/rwisman/N342/html/Hidden.htm [ ^ ]


http://www.quirksmode.org/js/cookies.html [ http://msdn.microsoft.com/en-us/library/bb386448.aspx [ ^ ]

For every page refresh the values are reset unless you remember them using a cookie or hiddenvariable or viewstate.. Please refer the links below to remember the previous state of the page when refreshing..


http://homepages.ius.edu/rwisman/N342/html/Hidden.htm[^]


http://www.quirksmode.org/js/cookies.html[^]


http://msdn.microsoft.com/en-us/library/bb386448.aspx[^]

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