Question

你好我们如何在jquery函数中循环一个数组。在downloadCSV函数中如果你观察项目中的意思我正在采取第0个数组。所以我现在很难编码那个数组。所以现在有n个数组。那么如何在函数内部循环呢？

<!doctype html>
<html>

<head>
    <script type="text/javascript" src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
</head>

<body>
    <a href='#' onclick='downloadCSV({ filename: "youtubeData.csv" });'>Download CSV</a>
    <script type="text/javascript">
        $(document).ready(function() {});

        function convertArrayOfObjectsToCSV(args) {
            var result, ctr, keys, columnDelimiter, lineDelimiter, data;
            data = args.data || null;
            if (data == null || !data.length) {
                return null;
            }
            columnDelimiter = args.columnDelimiter || ',';
            lineDelimiter = args.lineDelimiter || '\n';
            keys = Object.keys(data[0]);
            result = '';
            result += keys.join(columnDelimiter);
            result += lineDelimiter;
            data.forEach(function(item) {
                ctr = 0;
                keys.forEach(function(key) {
                    if (ctr > 0) result += columnDelimiter;
                    result += item[key];
                    ctr++;
                    console.log("columnDelimiter " + result);
                });
                result += lineDelimiter;
            });
            return result;

        }

        function downloadCSV(args) {
            var youtubeData = [];
            var data, filename, link;
            $.getJSON('https://www.googleapis.com/youtube/v3/commentThreads?key=""&textFormat=plainText&part=snippet,replies&videoId=eDHFc24mp38&maxResults=60', function(data) {
                youtubeData.push({
                    "comments": data.item[0].snippet.topLevelComment.snippet.authorDisplayName,


                });
                console.log(data.item[0].snippet.topLevelComment.snippet.authorDisplayName);
                var csv = convertArrayOfObjectsToCSV({
                    data: youtubeData
                });
                if (csv == null) return;

                filename = args.filename || 'export.csv';

                if (!csv.match(/^data:text\/csv/i)) {
                    csv = 'data:text/csv;charset=utf-8,' + csv;
                }
                data = encodeURI(csv);

                link = document.createElement('a');
                link.setAttribute('href', data);
                link.setAttribute('download', filename);
                link.click();
            });
        }
    </script>
</body>

</html>

Answer 1

您可以使用for循环迭代data.item，如下所述：

for(var i = 0; i < data.item.length; i++) {
    youtubeData.push({
        "comments": data.item[i].snippet.topLevelComment.snippet.authorDisplayName,
    });
}

在jquery中循环函数内部的数组

1 个答案: