Javascript 将json解析为js中的.csv
我发现这个脚本(运行良好)除了我想跳过几列(我只想提取第1、2、3、9列)之外,所以我有:Javascript 将json解析为js中的.csv,javascript,jquery,json,csv,Javascript,Jquery,Json,Csv,我发现这个脚本(运行良好)除了我想跳过几列(我只想提取第1、2、3、9列)之外,所以我有: $(document).ready(function(){ $('button').click(function(){ var data = $('#txt').val(); if(data == '') return; JSONToCSVConvertor(data, "Agenda", true); }); }); function
$(document).ready(function(){
$('button').click(function(){
var data = $('#txt').val();
if(data == '') return;
JSONToCSVConvertor(data, "Agenda", true);
});
});
function JSONToCSVConvertor(JSONData, ReportTitle, ShowLabel) {
//If JSONData is not an object then JSON.parse will parse the JSON string in an Object
var arrData = typeof JSONData != 'object'
? JSON.parse(JSONData)
: JSONData;
var CSV = '';
//Set Report title in first row or line
CSV += ReportTitle + '\r\n\n';
//This condition will generate the Label/Header
if (ShowLabel) {
var row = "";
//This loop will extract the label from 1st index of on array
for (var index = 0; i<arrData.length-1; index++) {
if (index == 4 || index == 5 || index == 6 || index == 7 || index == 8) {
continue;
}
else{
//Now convert each value to string and comma-seprated
row += index + ';';
row = row.slice(0, -1);
//append Label row with line break
CSV += row + '\r\n';
}
}
//1st loop is to extract each row
for (var i = 0; i < arrData.length-1; i++) {
if (i == 4 || i == 5 || i == 6 || i == 7 || i == 8) {
continue;
}
else{
var row = "";
}
//2nd loop will extract each column and convert it in string comma-seprated
for (var j = 0; i<arrData.length-1; j++) {
if (j == 4 || j == 5 || j == 6 || j == 7 || j == 8) {
continue;
}
else{
row += '"' + arrData[i][j] + '";';
}
}
}
row.slice(0, row.length - 1);
//add a line break after each row
CSV += row + '\r\n';
}
if (CSV == '') {
alert("Invalid data");
return;
}
//Generate a file name
var fileName = "Formapelec_";
//this will remove the blank-spaces from the title and replace it with an underscore
fileName += ReportTitle.replace(/ /g,"_");
//Initialize file format you want csv or xls
var uri = 'data:text/csv;charset=utf-8,' + escape(CSV);
// Now the little tricky part.
// you can use either>> window.open(uri);
// but this will not work in some browsers
// or you will not get the correct file extension
//this trick will generate a temp <a /> tag
var link = document.createElement("a");
link.href = uri;
//set the visibility hidden so it will not effect on your web-layout
link.style = "visibility:hidden";
link.download = fileName + ".csv";
//this part will append the anchor tag and remove it after automatic click
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
$(文档).ready(函数(){
$(“按钮”)。单击(函数(){
var data=$('#txt').val();
如果(数据=“”)返回;
JSONToCSVConvertor(数据,“议程”,真实);
});
});
函数JSONToCSVConvertor(JSONData、ReportTitle、ShowLabel){
//如果JSONData不是对象,那么JSON.parse将解析对象中的JSON字符串
var arrData=typeof JSONData!=“对象”
?JSON.parse(JSONData)
:JSONData;
var CSV=“”;
//在第一行或第一行设置报表标题
CSV+=ReportTitle+'\r\n\n';
//此条件将生成标签/标题
如果(显示标签){
var行=”;
//此循环将从数组的第一个索引中提取标签
for(var index=0;i window.open(uri);
//但这在某些浏览器中不起作用
//否则您将无法获得正确的文件扩展名
//这个技巧将生成一个临时标记
var link=document.createElement(“a”);
link.href=uri;
//将可见性设置为隐藏,使其不会影响web布局
link.style=“可见性:隐藏”;
link.download=fileName+“.csv”;
//此部件将附加定位标记,并在自动单击后将其删除
document.body.appendChild(链接);
link.click();
document.body.removeChild(link);
}
它应该只使用列1、2、3和9生成一个.csv,但没有任何返回。我使用if(){continue}尝试了不同的方法,但我要么使用所有列返回,要么根本没有返回。//第一个循环是提取每一行
//1st loop is to extract each row
for (var i = 0; i < arrData.length-1; i++) {
if (i == 4 || i == 5 || i == 6 || i == 7 || i == 8) {
continue;
}
对于(变量i=0;i
您也在跳过行,如果(var i=0;i不应该在那里{
for (var i = 0; i < arrData.length-1; i++) {
//2nd loop will extract each column and convert it in string comma-seprated
for (var j = 0; j<arrData[i].length; j++) {
if (j == 4 || j == 5 || j == 6 || j == 7 || j == 8) {
continue;
}
else{
row += '"' + arrData[i][j] + '";';
}
}
}
row.slice(0, row.length - 1);
//add a line break after each row
CSV += row + '\r\n';
}
//第二个循环将提取每个列,并将其转换为逗号分隔的字符串
对于(var j=0;jj这里的问题是什么?请编辑代码以在问题中提供测试数据字符串。(逻辑应将其解析为对象)。如果没有足够的细节来重现或测试问题,则可能会被视为离题。有关提问的帮助,请查看。