Question

我试过了：

$("#dvCSV").append(JSON.stringify(dataArray, null, '\t'));

但输出是：

[{＆＃34; 20＆＃34;：＆＃34; 10＆＃34;，＆＃34; Barcellona＆＃34;：＆＃34; Cagliari＆＃34;，＆＃34; Dipendenti＆＃34;：＆＃34; Dipendenti＆＃34; }，{＆＃34; 20＆＃34;：＆＃34; 15＆＃34;，＆＃34; Barcellona＆＃34;：＆＃34; Sassari＆＃34;，＆＃34; Dipendenti＆＃34;：＆＃ 34; Dipendenti＆＃34; }，{＆＃34; 20＆＃34;：＆＃34; 22＆＃34;，＆＃34; Barcellona＆＃34;：＆＃34;都灵＆＃34;，＆＃34; Dipendenti＆＃34;：＆＃ 34; Dipendenti＆＃34; } ]

关于SO的{p> This answer是完美的，但是我尝试应用它但没有管理它，这是可以玩的jsFiddle：

＆＃13;

$(function () {
    var csv = $("#fileUpload").val();

    $("#upload").bind("click", function () {
        var regex = /^([a-zA-Z0-9\s_\\.\-:])+(.csv|.txt)$/;
        if (regex.test($("#fileUpload").val().toLowerCase())) {
            if (typeof (FileReader) != "undefined") {
                var reader = new FileReader();
                reader.onload = function (e) {
                    var rows = e.target.result.split("\r\n");

                    if(rows.length>0){
                        var firstRowCells = GetCSVCells(rows[0], ",");

                        var dataArray = new Array();
                        for(var i=1;i<rows.length;i++)
                        {
                            var cells = GetCSVCells(rows[i], ",");
                            var obj = {};
                            for(var j=0;j<cells.length;j++)
                            {
                                obj[firstRowCells[j]] = cells[j];
                            }
                            dataArray.push(obj);
                        }

                        $("#dvCSV").html('');
                        $("#dvCSV").append(JSON.stringify(dataArray, null, '\t'));
                    }
                }
                reader.readAsText($("#fileUpload")[0].files[0]);
            } else {
                alert("This browser does not support HTML5.");
            }
        } else {
            alert("Please upload a valid CSV file.");
        }
    });
});

function GetCSVCells(row, separator){
    return row.split(separator);
}

＆＃13;

#heading { font-size: x-large; font-weight: bold; }
.text { width: 99%; height: 200px; }
.small { font-size: small; }

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
  <input type="file" id="fileUpload" name="fileUpload" />
  <input type="button" id="upload" value="Upload" name="upload"/>
  <hr />
<div id="dvCSV"></div>

＆＃13;

Answer 1

由于您将此附加到HTML元素，因此需要类似于将它设置为white-space到pre-wrap，以便正确包装。

Stack snippet

var arr = [ { "20": "10", "Barcellona": "Cagliari", "Dipendenti": "Dipendenti" }, { "20": "15", "Barcellona": "Sassari", "Dipendenti": "Dipendenti" }, { "20": "22", "Barcellona": "Torino", "Dipendenti": "Dipendenti" } ];

document.getElementById('dvCSV').innerHTML = JSON.stringify(arr, null, '\t');

#dvCSV {
  white-space: pre-wrap
}

<div id="dvCSV"></div>

Answer 2

它工作正常with spaces，如：

JSON.stringify(arr, null, '  '); // Using 2 spaces as the 'space' argument

＆＃13;

var arr = [ { "20": "10", "Barcellona": "Cagliari", "Dipendenti": "Dipendenti" }, { "20": "15", "Barcellona": "Sassari", "Dipendenti": "Dipendenti" }, { "20": "22", "Barcellona": "Torino", "Dipendenti": "Dipendenti" } ];

console.log(JSON.stringify(arr, null, '  '));

＆＃13;

如何用空格和新行输出JSON？

2 个答案: