删除lbRight里的项
function del()
{
right=documentgetElementById(lbRight);
for(i=rightlength;i>=;i)
{
if(rightoptions[i]selected)
{
rightremove(i);
}
}
//重新赋值
for(j=;j<rightlength;j++)
{
documentgetElementById(txtAllName)value+=rightoptions[j]text+;
documentgetElementById(txtAllID)value+=rightoptions[j]value+;
}
}
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