document.all(“authorid”).options.remove(0);
document.all(“authorid”).options.add(new Option(name,value));
转
下面的例子给出了一个完整的演示。由于看例子比我解说更容易理解，所以我就废话少说，把代码贴出，希望对大家需要的网友有一点帮助。
First Sample:
All items will change After you Selected!
Second Sample:
You selected Item in Main Select will change the Sub select Content!
Main Select:
Sub Select:
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