I am working on an asp.net mvc5 web application. and i need to implement a functionality to export an Html table into a .csv file . so i added the following link :-
<a href="#" class="export">Export Table data into Excel</a>
and i have the following script:-
$(document).ready(function () {
function exportTableToCSV($table, filename) {
var $rows = $table.find('tr:has(td)'),
// Temporary delimiter characters unlikely to be typed by keyboard
// This is to avoid accidentally splitting the actual contents
tmpColDelim = String.fromCharCode(11), // vertical tab character
tmpRowDelim = String.fromCharCode(0), // null character
// actual delimiter characters for CSV format
colDelim = '","',
rowDelim = '"\r\n"',
// Grab text from table into CSV formatted string
csv = '"' + $rows.map(function (i, row) {
var $row = $(row),
$cols = $row.find('td');
return $cols.map(function (j, col) {
var $col = $(col),
text = $col.text();
return text.replace('"', '""'); // escape double quotes
}).get().join(tmpColDelim);
}).get().join(tmpRowDelim)
.split(tmpRowDelim).join(rowDelim)
.split(tmpColDelim).join(colDelim) + '"',
// Data URI
csvData = 'data:application/csv;charset=utf-8,' + encodeURIComponent(csv);
$(this)
.attr({
'download': filename,
'href': csvData,
'target': '_blank'
});
}
// This must be a hyperlink
$(".export").on('click', function (event) {
// CSV
exportTableToCSV.apply(this, [$('#dvData>table'), 'export.csv']);
// IF CSV, don't do event.preventDefault() or return false
// We actually need this to be a typical hyperlink
});
});
and i am using the tabletoCSV plugin at this link , as follow:-
jQuery.fn.table2CSV = function (options) {
var options = jQuery.extend({
separator: ',',
header: [],
delivery: 'popup' // popup, value
},
options);
var csvData = [];
var headerArr = [];
var el = this;
//header
var numCols = options.header.length;
var tmpRow = []; // construct header avalible array
if (numCols > 0) {
for (var i = 0; i < numCols; i++) {
tmpRow[tmpRow.length] = formatData(options.header[i]);
}
} else {
$(el).filter(':visible').find('th').each(function () {
if ($(this).css('display') != 'none') tmpRow[tmpRow.length] = formatData($(this).html());
});
}
row2CSV(tmpRow);
// actual data
$(el).find('tr').each(function () {
var tmpRow = [];
$(this).filter(':visible').find('td').each(function () {
if ($(this).css('display') != 'none') tmpRow[tmpRow.length] = formatData($(this).html());
});
row2CSV(tmpRow);
});
if (options.delivery == 'popup') {
var mydata = csvData.join('\n');
return popup(mydata);
} else {
var mydata = csvData.join('\n');
return mydata;
}
function row2CSV(tmpRow) {
var tmp = tmpRow.join('') // to remove any blank rows
// alert(tmp);
if (tmpRow.length > 0 && tmp != '') {
var mystr = tmpRow.join(options.separator);
csvData[csvData.length] = mystr;
}
}
function formatData(input) {
// replace " with “
var regexp = new RegExp(/["]/g);
var output = input.replace(regexp, "“");
//HTML
var regexp = new RegExp(/\<[^\<]+\>/g);
var output = output.replace(regexp, "");
if (output == "") return '';
return '"' + output + '"';
}
function popup(data) {
var generator = window.open('', 'csv', 'height=400,width=600');
generator.document.write('<html><head><title>CSV</title>');
generator.document.write('</head><body >');
generator.document.write('<textArea cols=70 rows=15 wrap="off" >');
generator.document.write(data);
generator.document.write('</textArea>');
generator.document.write('</body></html>');
generator.document.close();
return true;
}
};
currently i got the following markup, which shows a table and the Export hyperlink :-
<table id="dvData" class= "table table-striped table-bordered bootstrap-datatable datatable">
<tr>
<th></th>
<th>
Name
</th>
<th class="hidden-phone hidden-tablet">
Description
</th>
<th>
User Groups
</th>
<th>
Security Roles
</th>
<th class="hidden-phone hidden-tablet">
</th>
</tr>
<tr id = "234">
<td>
<a href="/SecurityGroup/Edit/234">Edit</a>
|
<a data-ajax="true" data-ajax-confirm="Are You sure You want to delete (de)" data-ajax-failure="deletionerror" data-ajax-method="Post" data-ajax-success="deletionconfirmation" href="/SecurityGroup/Delete/234">Delete</a> </td>
<td>
<a href="/SecurityGroup/Details/234">de</a>
</td>
<td class="hidden-phone hidden-tablet">
d
</td>
<td>
The are <a href="/SecurityGroup/Details/234">0</a> Users.
</td>
<td>
</td>
<td class="center hidden-phone hidden-tablet">
<a class="btn btn-success" href="/SecurityGroup/Details/234">
<i class="icon-zoom-in icon-white"></i>
Details
</a>
</td>
</tr>
<tr id = "233">
<td>
<a href="/SecurityGroup/Edit/233">Edit</a>
</td>
<td>
<a href="/SecurityGroup/Details/233">only me</a>
</td>
<td class="hidden-phone hidden-tablet">
</td>
<td>
The are <a href="/SecurityGroup/Details/233">10</a> Users.
</td>
<td>
</td>
<td class="center hidden-phone hidden-tablet">
<a class="btn btn-success" href="/SecurityGroup/Details/233">
<i class="icon-zoom-in icon-white"></i>
Details
</a>
</td>
</tr>
<tr id = "230">
<td>
<a href="/SecurityGroup/Edit/230">Edit</a>
|
<a data-ajax="true" data-ajax-confirm="Are You sure You want to delete (rwerwe)" data-ajax-failure="deletionerror" data-ajax-method="Post" data-ajax-success="deletionconfirmation" href="/SecurityGroup/Delete/230">Delete</a> </td>
<td>
<a href="/SecurityGroup/Details/230">rwerwe</a>
</td>
<td class="hidden-phone hidden-tablet">
</td>
<td>
The are <a href="/SecurityGroup/Details/230">0</a> Users.
</td>
<td>
</td>
<td class="center hidden-phone hidden-tablet">
<a class="btn btn-success" href="/SecurityGroup/Details/230">
<i class="icon-zoom-in icon-white"></i>
Details
</a>
</td>
</tr>
<tr id = "231">
<td>
<a href="/SecurityGroup/Edit/231">Edit</a>
</td>
<td>
<a href="/SecurityGroup/Details/231">users</a>
</td>
<td class="hidden-phone hidden-tablet">
</td>
<td>
The are <a href="/SecurityGroup/Details/231">1</a> Users.
</td>
<td>
</td>
<td class="center hidden-phone hidden-tablet">
<a class="btn btn-success" href="/SecurityGroup/Details/231">
<i class="icon-zoom-in icon-white"></i>
Details
</a>
</td>
</tr>
<tr id = "232">
<td>
<a href="/SecurityGroup/Edit/232">Edit</a>
</td>
<td>
<a href="/SecurityGroup/Details/232">w</a>
</td>
<td class="hidden-phone hidden-tablet">
w
</td>
<td>
The are <a href="/SecurityGroup/Details/232">5</a> Users.
</td>
<td>
</td>
<td class="center hidden-phone hidden-tablet">
<a class="btn btn-success" href="/SecurityGroup/Details/232">
<i class="icon-zoom-in icon-white"></i>
Details
</a>
</td>
</tr>
</table></div></div></div>
<a href="#" class="export">Export Table data into Excel</a> </section>
but when i click on the export hyperlink , and i save the document ; the document size will be 1 kb only and when i open it using excel it shows empty sheet and if i open it using Notepad it will show ""
so can anyone adivce ?
I'll leave a working fiddle example at the bottom.
The part that needed some work was primarily:
exportTableToCSV.apply(this, [$('#dvData>table'), 'export.csv']);
To:
exportTableToCSV.apply(this, [$('#dvData'), 'export.csv']);
Then it was a matter of formatting the results:
// actual delimiter characters for CSV format
colDelim = ",",
rowDelim = "\r\n",
// Grab text from table into CSV formatted string
csv = $rows.map(function (i, row) {
var $row = $(row),
$cols = $row.find('td');
return $cols.map(function (j, col) {
var $col = $(col),
text = '"' + $col.text().replace(/(\r\n|\n|\r)/gm,"").trim() + '"';
return text //.replace('"', '""'); // escape double quotes
}).get().join(tmpColDelim);
}).get().join(tmpRowDelim)
.split(tmpRowDelim).join(rowDelim)
.split(tmpColDelim).join(colDelim),
It now returns a comma separated list, where each column is enclosed with quotes.
Example on jsFiddle
I'll leave the fine tuning to you.
来源：https://stackoverflow.com/questions/29631019/export-html-table-into-csv-file-always-return-empty-file