javascript - 是/否确认消息

Question

我正在尝试获取带有是/否选项的警告消息，其中单击"is"会重新加载另一个下拉选项，而“否”将恢复为之前的选择。这是我想说的(显然行不通):

<select size="1" name="m" id="m">  
    <option selected value="1">apple</option>
    <option value="2">ball</option>
    <option value="3">cat</option>
    <option value="4">dog</option>
    <option value="5">egg</option>
</select>

$('#m').change(function() {
    var answer = confirm("this will change your selection.");
    if (answer) { // ie, if i click 'OK'
        location.reload(); // reload the <select> option below to "selected"
    } else {
        break; // revert back to the previous selection
    }
});


<select size="1" name="a" id="a">  
    <option selected value="1">aaa</option>
    <option value="2">bbb</option>
    <option value="3">ccc</option>
</select>

非常感谢。欢迎调用click , 并编辑。

Answer 1

我不太确定您要完成什么...是吗 this ？

var _selected = $('#m').val();
$('#m').change(function() {
    var answer = confirm("this will change your selection.");
    if (answer) { // ie, if i click 'OK'
        _selected = $(this).val();
        $('#a').val(_selected);
    } else {
        $(this).val(_selected);
    }
});​