我正在尝试创建一个 csv 编辑器。我想导入一个 csv 并将其转换为 html 中的表格。这是以下代码：
<html>
<head>
<title></title>
</head>
<body>
<div class="container">
<h1>Build Table</h1>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<input type="file" id="file" name="file">
<div>
<table id="blacklistgrid">
<tr class="Row">
<td>
<input type="text"/>
</td>
<td>
<input type="text"/>
</td>
<td>
<input type="text"/>
</td>
</tr>
</table>
<button type="button" id="btnAdd">Add Row!</button>
<button><a href="#" class="export">Export Table data into Excel</a></button>
</div>
<script>
function parseResult(result) {
var resultArray = [];
result.split("\n").forEach(function(row) {
var rowArray = [];
row.split(",").forEach(function(cell) {
rowArray.push(cell);
});
resultArray.push(rowArray);
});
return resultArray;
}
function createTable(array) {
var content = "";
array.forEach(function(row) {
content += "<tr>";
row.forEach(function(cell) {
content += "<td><input type=\"text\" value=\"" + cell + "\"/></td>" ;
});
content += "</tr>";
});
document.getElementById("#blacklistgrid").innerHTML = content;
}
jQuery(document).ready(function () {
jQuery('#btnAdd').click(function () {
jQuery( ".Row" ).clone().appendTo( "#blacklistgrid" );
});
var file = document.getElementById('file');
file.addEventListener('change', function() {
var reader = new FileReader();
var f = file.files[0];
reader.onload = function(e) {
var CSVARRAY = parseResult(e.target.result); //this is where the csv array will be
createTable(CSVARRAY);
};
reader.readAsText(f);
});
});
$(document).ready(function () {
function exportTableToCSV($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('input');
return $cols.map(function(j, col) {
var $col = $(col),
text = $col.val();
return text.replace(/"/g, '""'); // escape double quotes
}).get().join(tmpColDelim);
}).get().join(tmpRowDelim)
.split(tmpRowDelim).join(rowDelim)
.split(tmpColDelim).join(colDelim) + '"';
// Deliberate 'false', see comment below
if (false && window.navigator.msSaveBlob) {
var blob = new Blob([decodeURIComponent(csv)], {
type: 'text/csv;charset=utf8'
});
// Crashes in IE 10, IE 11 and Microsoft Edge
// See MS Edge Issue #10396033
// Hence, the deliberate 'false'
// This is here just for completeness
// Remove the 'false' at your own risk
window.navigator.msSaveBlob(blob, filename);
} else if (window.Blob && window.URL) {
// HTML5 Blob
var blob = new Blob([csv], {
type: 'text/csv;charset=utf-8'
});
var csvUrl = URL.createObjectURL(blob);
$(this)
.attr({
'download': filename,
'href': csvUrl
});
} else {
// Data URI
var csvData = 'data:application/csv;charset=utf-8,' + encodeURIComponent(csv);
$(this)
.attr({
'download': filename,
'href': csvData,
'target': '_blank'
});
}
}
// This must be a hyperlink
$(".export").on('click', function(event) {
// CSV
var args = [$('#blacklistgrid'), 'export.csv'];
exportTableToCSV.apply(this, args);
// If CSV, don't do event.preventDefault() or return false
// We actually need this to be a typical hyperlink
});
});
</script>
</body>
</html>
我无法使导入功能正常工作。并且，这些是以下错误：
Uncaught TypeError: Cannot set property 'innerHTML' of null
at createTable ((index):54)
at FileReader.reader.onload ((index):69)
我究竟做错了什么？
不要把#论据放在document.getElementById. 它应该是：
document.getElementById("blacklistgrid").innerHTML = content;
或使用 jQuery：
$("#blacklistgrid").html(content);
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