jquery select option 操作

jQuery 是一个非常强大的JS类库,现在越用觉得越好用了。

使用jquery如何操作select(下拉框)呢?主要讲下怎么动态添加option 动态选择option,假如我们的select 控件的 id 属性为 sel

jquery 清空 option $(“#sel”).empty();
jquery 增加 option $(“#sel”).append(‘”);
jquery 选择 option $(“#sel”).val(1); 使用这个就可以将 select 中值为 1 的项设定为选中状态

jQuery获取Select选择的Text和Value:

1. $(“#select_id”).change(function(){//code…}); //为Select添加事件,当选择其中一项时触发
2. var checkText=$(“#select_id”).find(“option:selected”).text(); //获取Select选择的Text
3. var checkValue=$(“#select_id”).val(); //获取Select选择的Value
4. var checkIndex=$(“#select_id “).get(0).selectedIndex; //获取Select选择的索引值
5. var maxIndex=$(“#select_id option:last”).attr(“index”); //获取Select最大的索引值
jQuery添加/删除Select的Option项:
1. $(“#select_id”).append(““); //为Select追加一个Option(下拉项)
2. $(“#select_id”).prepend(““); //为Select插入一个Option(第一个位置)
3. $(“#select_id option:last”).remove(); //删除Select中索引值最大Option(最后一个)
4. $(“#select_id option[index=’0′]”).remove(); //删除Select中索引值为0的Option(第一个)
5. $(“#select_id option[value=’3′]”).remove(); //删除Select中Value=’3’的Option
5. $(“#select_id option[text=’4′]”).remove(); //删除Select中Text=’4’的Option

内容清空:

$(“#charCity”).empty();

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