循环遍历数组，每次都进行ajax调用，不起作用

发布于 2024-12-02 10:04:38 字数 1178 浏览 0 评论 0原文

我遇到这个问题，基本上，我有一个大数组，每次循环时我都会将其分解为较小的数组。在循环中，我有一个 ajax 调用，它将该数组发送到一个 url。问题是它只进行一次 ajax 调用，但它会在控制台中记录其他较小的数组。知道为什么会发生这种情况吗？

  //emailArray = [[email protected], [email protected]..... (up to a number greater than 10)
  while(emailArray.length) {
            console.log(emailArray.splice(0,10));



            $.ajax({
                url:"some/url",
                type: "POST",
                data: {
                    "object": emailArray.splice(0,10)
                },
                dataType: "json",
                success: function (data, status, xhr) {
                    //callback(data);
                    console.log('data from success');
                    console.log(data);
                }
            });
            console.log('after ajax');
        }

编辑，循环旨在为大数组中的每 10 个项目发送一个新的 ajax 请求，并且发送的数组中有 10 个项目。当我将它们记录在控制台中时，.splice 很好地分解了数组......但它没有执行 ajax 部分

原文

I'm having this problem, where basically, I have a big array, that I break down to smaller arrays each time the loop does a loop. Within the loop I have an ajax call which sends that array to a url. The problem is that it only makes the ajax call once, but it logs the other smaller arrays in the console. Any idea why this is happening?

  //emailArray = [[email protected], [email protected]..... (up to a number greater than 10)
  while(emailArray.length) {
            console.log(emailArray.splice(0,10));



            $.ajax({
                url:"some/url",
                type: "POST",
                data: {
                    "object": emailArray.splice(0,10)
                },
                dataType: "json",
                success: function (data, status, xhr) {
                    //callback(data);
                    console.log('data from success');
                    console.log(data);
                }
            });
            console.log('after ajax');
        }

Edit, the loop is designed to send a new ajax request for every 10 items in the big array, and the array that is sent has 10 items in it. The .splice breaks up the arrays fine when I just log them in the console... but it's not doing the ajax part

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红尘作伴 2024-12-09 10:04:38

.splice() 对源数组具有破坏性，因此您的 console.log(emailArray.splice(0,10)); 会弄乱 emailArray 并导致您错过迭代。

您可以在 console.log().slice() （这不是破坏性的，但会返回副本）而不是 .splice()代码> 语句如下：

  //emailArray = [[email protected], [email protected]..... (up to a number greater than 10)
  while(emailArray.length) {
            console.log(emailArray.slice(0,10));

            $.ajax({
                url:"some/url",
                type: "POST",
                data: {
                    "object": emailArray.splice(0,10)
                },
                dataType: "json",
                success: function (data, status, xhr) {
                    //callback(data);
                    console.log('data from success');
                    console.log(data);
                }
            });
            console.log('after ajax');
        }

.splice() is destructive on the source array so your console.log(emailArray.splice(0,10)); is messing up emailArray and causing you to miss iterations.

You can use .slice() (which is not destructive, but returns a copy) instead of .splice() in the console.log() statement like this:

  //emailArray = [[email protected], [email protected]..... (up to a number greater than 10)
  while(emailArray.length) {
            console.log(emailArray.slice(0,10));

            $.ajax({
                url:"some/url",
                type: "POST",
                data: {
                    "object": emailArray.splice(0,10)
                },
                dataType: "json",
                success: function (data, status, xhr) {
                    //callback(data);
                    console.log('data from success');
                    console.log(data);
                }
            });
            console.log('after ajax');
        }

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