单击Event Works，但不单击Window.onunload作为函数

Question

因此，如果我从window.onunload切换并取消注释#driver click事件，则此代码将完全起作用。 我可以看到它正在写入SQL数据库，并且在使其在窗口关闭时起作用之前已经对其进行了调试。 调试并依赖于click事件，它将通过完整的表单并提交我想要的信息。 我已经检查过PHP代码，并沿着SQL数据库路径打印出格式正确的字符串。

window.onunload发生的事情是它执行同步提交，但是没有捕获任何表单元素。 它提交的只是已定义的购物车数据。

问题是，为什么从一个事件触发器切换到另一个事件时，行为有何不同？

var formData = new Array();
var orderSubTotal ='46.15';
var orderTotal  ='46.15';
var numOfItems ='2';
var items =new Array('item1','item2');
var ids =new Array('id1','id2');
var codes =new Array('code1','code2');
var qtys =new Array('1','1');
var price =new Array('44.95','1.2');
var orderTax ='0';
var orderShipping ='0';
var appliedPromoIdList ='';
var coupon ='';
var storeId ='storeid';
var activeShipPromotionCount ='';
var itemImages  =new Array('image1','image2');

$(document).ready(function() {

//$("#driver").click(function() {
    function submitform(formData) {
    var formData = $("#testform :input[id!='card-type'][id!='paymentSelection_0']"+
    "[id!='ccSelectedRadio'][id!='card-number'][id!='card-exp-month'][id!='card-exp-year'][id!='card-cvv'][id!='billing-first-name']"+
    "[id!='billing-last-name'][id!='billing-company'][id!='billing-address1'][id!='billing-address2'][id!='billing-city']"+
    "[id!='billing-state'][id!='billing-zip'][id!='billing-phone'][id!='billing-country'][id!='useShippingRadio'][id!='useBillingRadio']"+
    "[id!='ppSelectedRadio'][name!='miscDS.shopperEmailAddress_ymixval'][name!='miscDS.shopperEmailAddress_ymixlabel']"+
    "[name!='miscDS.shopperEmailAddress_secname'][name!='paymentSelectionDS.paymentSelection_ROW0_paymentPPSelected']").serializeArray();
    var date=new Date();

    $.ajax(
        {
            url: 'jquery/process.php',
            data: {
            mydata: formData,
            orderSubTotal: orderSubTotal,
            orderTotal: orderTotal,
            numOfItems: numOfItems,
            items: items,
            ids: ids,
            codes: codes,
            qtys: qtys,
            price: price,
            orderTax: orderTax,
            orderShipping: orderShipping,
            appliedPromoIdList: appliedPromoIdList,
            coupon: coupon,
            storeId: storeId,
            activeShipPromotionCount: activeShipPromotionCount,
            itemImages: itemImages,
            date: date
            },
            async: false
        });
        return formData;
};
window.onunload(submitform());
});

Answer 1

添加括号会立即执行该函数：

window.onunload(submitform());

您应该只引用它：

window.onunload = submitform;

而且您所有的变量都在全局范围内，并且那个选择器太可怕了！