javascript - 我如何在提交按钮下使用ajax数据变量

Question

当我点击提交按钮时，我无法收到值yearend。相反，我得到了一个未定义的值。单击提交按钮时如何获取yearend值？

我的代码:

$("#company").change(function() {

    $("#dFrom").val("");
    $("#dTo").val("");
    var pass_code = $("#company").val();
    var callpage = "dentrycomp.php?pass_code=" + pass_code
    var yearend= null;
    $.ajax({
        type: "GET",
        url: callpage,
        async: false,
        success: function(data) {
            yearend= data,
            $("#content").html("")
            $("#content").html(data)
        }
    });
    //var yearend = "<?php echo $_SESSION['yearend'] ; ?>"
    alert(yearend +"company");
    this alert box getting the right value yearend.i want that value recieve in under submit button                         
    return true;
});


$('#submit').live('click',function() {
//var yearend = "<?php echo $_SESSION['yearend'] ; ?>"
alert("this is submit button"+yearend);

Answer 1

var yearend = null;

$("#company").change(function() {

    $("#dFrom").val("");
    $("#dTo").val("");
    var pass_code = $("#company").val();
    var callpage = "dentrycomp.php?pass_code=" + pass_code

    $.ajax({
        type: "GET",
        url: callpage,
        async: false,
        success: function(data) {
            yearend = data,
            $("#content").html("")
            $("#content").html(data)
        }
    });

    //var yearend = "<?php echo $_SESSION['yearend'] ; ?>"
    alert(yearend + "company");
    this alert box getting the right value yearend.i want that value recieve in under submit button
    return true;
});

$('#submit').live('click', function() {
//var yearend = "<?php echo $_SESSION['yearend'] ; ?>"
alert("this is submit button" + yearend); });

您应该全局声明yearend，即在代码顶部。