JQuery select标签操作代码段

//1.获取选中option值 
$('#selectList').val(); 
//2.获取选中option的文本 
$('#selectList :selected').text(); 
//3.获取多个选中option值、文本 
var foo = []; 
$('#multiple :selected').each(function(i, selected) { 
foo[i] = $(selected).text(); 
}); 
// to get the selected values, just use .val() - this returns a string or array 
foo = $('#multiple :selected').val(); 
//4.使用选项option的条件表达式 
switch ($('#selectList :selected').text()) { 
case 'First Option': 
//do something 
break; 
case 'Something Else': 
// do something else 
break; 
} 
//5.删除某个value=2的option 
$("#selectList option[value='2']").remove(); 
//6.从list A 移动option到 list B. 
// here we have 2 select lists and 2 buttons. If you click the “add” button, 
// we remove the selected option from select1 and add that same option to select2. 
// The “remove” button just does things the opposite way around. 
// Thanks to jQuery's chaining capabilities, what was once a rather tricky undertaking with JS can now be done in 6 lines of code. 
$().ready(function() { 
$('#add').click(function() { 
return !$('#select1 option:selected').appendTo('#select2'); 
}); 
$('#remove').click(function() { 
return !$('#select2 option:selected').appendTo('#select1'); 
}); 
});