Question

我的名字是Dan，我不熟悉Javascript，但我想出了一些代码，其中所需的功能是$ .each div.extractedGroup通过$ .ajax发送其.html（）并等待$ .each继续下一组之前的响应。

我可能过于复杂了，但我怎么能改变我的代码才能做到这一点？

我试过的是设置一个变量，当ajax调用是beforeSend时为true，成功时为false，成功事件处理程序中的setTimeout函数，我一直试图包装$ .ajax调用使用setTimeout函数但没有成功。我觉得我过于复杂了，但我似乎无法理解这一点。

javascript：

$('#processGroup').on('click', function(event) {
event.preventDefault();
$('.extractedGroup').each(function(index, el) {
    data = $(this).html();
    request = $.ajax({
        url: 'wait.php',
        type: 'POST',
        dataType: 'json',
        data: {
            urlstoparse: data
        },
        beforeSend: function() {
            console.log('sending: ' + data);
            //next in $.each should wait until success before next group is processed
        },
        success: function(res) {
            console.log(res);
            //next in $.each can now be processed
        }
    })
        .done(function() {
            console.log("success");
        })
        .fail(function(res) {
            console.log(res);
        })
        .always(function() {
            console.log("complete");
        });
});

}）;

HTML：

<div id="responseResult" style="">
<div class="extractedGroup">www.pinterest.com/pin/504262489497532154/,www.pinterest.com/pin/355080751843289362/,www.pinterest.com/pin/294704369339289320/,www.pinterest.com/pin/300685712590894312/,</div>
<div class="extractedGroup">www.pinterest.com/pin/555068722796876871/,www.pinterest.com/pin/69805862945258757/,www.pinterest.com/pin/94575660900159173/,www.pinterest.com/pin/521221356846916476/,</div>
<div class="extractedGroup">www.pinterest.com/pin/197173289911047820/,www.pinterest.com/pin/413486809511385544/,www.pinterest.com/pin/355080751843289327/,www.pinterest.com/pin/53691420527287022/,</div>
<div class="extractedGroup">www.pinterest.com/pin/135882113732404986/,www.pinterest.com/pin/464222674063278838/,www.pinterest.com/pin/339318153145966062/,www.pinterest.com/pin/31103053648675435/,</div>
<div class="extractedGroup">www.pinterest.com/pin/414542340674052776/,www.pinterest.com/pin/65583738298561215/,www.pinterest.com/pin/497718196292156699/,www.pinterest.com/pin/101753272800833432/,</div>
<div class="extractedGroup">www.pinterest.com/pin/421157002626993183/,www.pinterest.com/pin/43628690112051613/,www.pinterest.com/pin/414542340674052770/,www.pinterest.com/pin/220957925438000313/,</div>
<div class="extractedGroup">www.pinterest.com/pin/462322717970755136/,</div>

我在这里做错了什么？任何帮助深表感谢。谢谢！

Answer 1

感谢jfriend00我了解到没有停顿并等待javascript，让我重写我的代码：

var groups = $('.extractedGroup');
var i = 0;
getData(i, groups);

function getData(i, groups) {
    count = groups.length;
    if (i < count) {
    request = $.ajax({
        url: 'wait.php',
        type: 'POST',
        dataType: 'json',
        data: {
            urlstoparse: groups.eq(i).html()
        },
        beforeSend: function() {
            console.log('sending: ' + groups.eq(i).html());

        },
        success: function(res) {
            console.log(res);
            i = i + 1;
            getData(i, groups);
        }
    })
        .done(function() {
            console.log("success");
        })
        .fail(function(res) {
            console.log(res);
        })
        .always(function() {
            console.log("complete");
        });
}
}

无法找到如何等待ajax调用完成之前。还在继续

1 个答案: