运行Ajax之后如何捕获值？

我的站点使用的是jQuery，我在项目中有一个更新部分，还有三个下拉列表：

• 1、已完成？
• 2、工作时数
• 3、谁在这个项目上工作？

我试图使用jQuery创建一个Ajax调用，当选择它时，可以调用$.ajax()并将数据发送到我的php页面以更新MySQL数据库。我猜我能做到：

获取SELECT中的数据并将其存储在变量中，并使用$.ajax将其作为数据发送，但我不确定在选择并运行Ajax之后如何捕获值？

有什么建议吗？

I would use the jQuery post method.. something like:

$.post("updater.php", { completed: variableWithCompletedFromSelect } );

Just call that in the on change event on the select, and pass in the select's value. Then your php script will have $_POST['completed'] with the new value.

As FryGuy said the $.post method is probably your best bet although I'd lay it out like this:

$("#project select").change(function(){ // use one selector for all 3 selects
    $.post("someurl.php",{
        // data to send
        completed: $("select#completed").val(),
        hours:     $("select#hours").val(),
        who:       $("select#who").val()
    }, function(data) {
        // do callback stuff with the server response 'data' here
    });
});

This might not be exactly what you wanted if the three selects occur more than once on the page. I'd recommend reading through the jquery docs to get a handle on events. As for pulling out data you just need to use selectors and methods like .text(), .val(), .html(), .attr() etc... at the point you need them. The information you want is always in the DOM somewhere.