我在网站上有一个 html 表格中的数据表,需要知道如何将该数据导出为 .csv 文件。
这将如何完成?
要将 html 导出到 csv,请尝试遵循此示例。 更多详细信息和示例请访问 作者网站。
创建一个 html2csv.js 文件并将以下代码放入其中。
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($(this).html());
});
row2CSV(tmpRow);
});
if (options.delivery == 'popup') {
var mydata = csvData.join('\n');
return popup(mydata);
} else {
var mydata = csvData.join('\n');
return mydata;
}
function row2CSV(tmpRow) {
var tmp = tmpRow.join('') // to remove any blank rows
// alert(tmp);
if (tmpRow.length > 0 && tmp != '') {
var mystr = tmpRow.join(options.separator);
csvData[csvData.length] = mystr;
}
}
function formatData(input) {
// replace " with “
var regexp = new RegExp(/["]/g);
var output = input.replace(regexp, "“");
//HTML
var regexp = new RegExp(/\<[^\<]+\>/g);
var output = output.replace(regexp, "");
if (output == "") return '';
return '"' + output + '"';
}
function popup(data) {
var generator = window.open('', 'csv', 'height=400,width=600');
generator.document.write('<html><head><title>CSV</title>');
generator.document.write('</head><body >');
generator.document.write('<textArea cols=70 rows=15 wrap="off" >');
generator.document.write(data);
generator.document.write('</textArea>');
generator.document.write('</body></html>');
generator.document.close();
return true;
}
};
将js文件包含到html页面中,如下所示:
<script type="text/javascript" src="jquery-1.3.2.js" ></script>
<script type="text/javascript" src="html2CSV.js" ></script>
表:
<table id="example1" border="1" style="background-color:#FFFFCC" width="0%" cellpadding="3" cellspacing="3">
<tr>
<th>Title</th>
<th>Name</th>
<th>Phone</th>
</tr>
<tr>
<td>Mr.</td>
<td>John</td>
<td>07868785831</td>
</tr>
<tr>
<td>Miss</td>
<td><i>Linda</i></td>
<td>0141-2244-5566</td>
</tr>
<tr>
<td>Master</td>
<td>Jack</td>
<td>0142-1212-1234</td>
</tr>
<tr>
<td>Mr.</td>
<td>Bush</td>
<td>911-911-911</td>
</tr>
</table>
导出按钮:
<input value="Export as CSV 2" type="button" onclick="$('#example1').table2CSV({header:['prefix','Employee Name','Contact']})">
我能够使用此处概述的答案:使用 jQuery 和 html 导出到 CSV 并添加修改以使其在 IE 中工作,以及评论中提到的另一个修改以从表中获取标题。
function exportTableToCSV($table, filename) {
var $rows = $table.find('tr:has(td),tr:has(th)'),
// 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,th');
return $cols.map(function (j, col) {
var $col = $(col), text = $col.text();
return text.replace(/"/g, '""'); // 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);
console.log(csv);
if (window.navigator.msSaveBlob) { // IE 10+
//alert('IE' + csv);
window.navigator.msSaveOrOpenBlob(new Blob([csv], {type: "text/plain;charset=utf-8;"}), "csvname.csv")
}
else {
$(this).attr({ 'download': filename, 'href': csvData, 'target': '_blank' });
}
}
// This must be a hyperlink
$("#xx").on('click', function (event) {
exportTableToCSV.apply(this, [$('#projectSpreadsheet'), 'export.csv']);
// IF CSV, don't do event.preventDefault() or return false
// We actually need this to be a typical hyperlink
});
我的链接看起来像这样...
<a href="#" id="xx" style="text-decoration:none;color:#000;background-color:#ddd;border:1px solid #ccc;padding:8px;">Export Table data into Excel</a>
下面的解决方案可以做到。
$(function() {
$("button").on('click', function() {
var data = "";
var tableData = [];
var rows = $("table tr");
rows.each(function(index, row) {
var rowData = [];
$(row).find("th, td").each(function(index, column) {
rowData.push(column.innerText);
});
tableData.push(rowData.join(","));
});
data += tableData.join("\n");
$(document.body).append('<a id="download-link" download="data.csv" href=' + URL.createObjectURL(new Blob([data], {
type: "text/csv"
})) + '/>');
$('#download-link')[0].click();
$('#download-link').remove();
});
});
table {
border-collapse: collapse;
}
td,
th {
border: 1px solid #aaa;
padding: 0.5rem;
text-align: left;
}
td {
font-size: 0.875rem;
}
.btn-group {
padding: 1rem 0;
}
button {
background-color: #fff;
border: 1px solid #000;
margin-top: 0.5rem;
border-radius: 3px;
padding: 0.5rem 1rem;
font-size: 1rem;
}
button:hover {
cursor: pointer;
background-color: #000;
color: #fff;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<thead>
<tr>
<th>Name</th>
<th>Author</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>jQuery</td>
<td>John Resig</td>
<td>The Write Less, Do More, JavaScript Library.</td>
</tr>
<tr>
<td>React</td>
<td>Jordan Walke</td>
<td>React makes it painless to create interactive UIs.</td>
</tr>
<tr>
<td>Vue.js</td>
<td>Yuxi You</td>
<td>The Progressive JavaScript Framework.</td>
</tr>
</tbody>
</table>
<div class="btn-group">
<button>csv</button>
</div>
这是一个非常快速的 CoffeeScript/jQuery 示例
csv = []
for row in $('#sometable tr')
csv.push ("\"#{col.innerText}\"" for col in $(row).find('td,th')).join(',')
output = csv.join("\n")
感谢
gene tsai
,以下是对其代码的一些修改,以便在我的目标页面上运行:
csv = []
rows = $('#data tr');
for(i =0;i < rows.length;i++) {
cells = $(rows[i]).find('td,th');
csv_row = [];
for (j=0;j<cells.length;j++) {
txt = cells[j].innerText;
csv_row.push(txt.replace(",", "-"));
}
csv.push(csv_row.join(","));
}
output = csv.join("\n")
改进:
for
循环您可以使用 Chrome 扩展程序,我尝试过几次,效果很好。
https://chrome.google.com/webstore/search/html%20table%20to%20csv?_category=extensions
安装后,在任何带有表格的网页上,如果您单击此扩展程序的图标,它会显示页面中的所有表格,当您将鼠标悬停在其列出的表格上时突出显示每个表格,单击允许您将其复制到剪贴板或保存到 Google 文档。
它非常适合我的需要,即偶尔将基于网络的表格数据转换为我可以使用的电子表格。
如果不经常需要,请尝试几个 Firefox 插件之一,这些插件有助于将 HTML 表格数据复制到剪贴板(例如,https://addons.mozilla.org/en-US/firefox/addon/dafizilla-table2clipboard/) 。例如,对于“table2clipboard”附加组件:
我简要介绍了一种使用 Google 电子表格(
importHTML
)和 Python(Pandas read_html
和 to_csv
)实现此目的的简单方法,以及我的 SO 答案中的示例 Python 脚本:https:/ /stackoverflow.com/a/28083469/1588795.
下面是纯js和基于html的解决方案,它将html转换为csv并导出文件
function downloadCSV() {
// Getting values of current time for generating the file name, with current date and time
const dateTime = new Date();
const day = dateTime.getDate();
const month = dateTime.getMonth() + 1;
const year = dateTime.getFullYear();
const hour = dateTime.getHours();
const minute = dateTime.getMinutes();
const postfix = `${day}.${month}.${year}_${hour}.${minute}`;
//get the table by its id
const table = document.getElementById('shiftTable');
let csvContent = '';
//traverse the table rows and create csv contents
for (let i = 0; i < table.rows.length; i++) {
let row = table.rows[i];
let rowData = [];
//traverse the table columns and create comma separeted columns
for (let j = 0; j < row.cells.length; j++) {
let cell = row.cells[j];
//don't include the columns which have 'ignore-column' attribute, in case some column need to be removed from csv
if (cell.attributes.getNamedItem('ignore-column') == null) {
rowData.push(cell.textContent.replace(/,/g, ''));
}
}
//add line feed to complete a row
csvContent += rowData.join(',') + '\r\n';
}
//xreatea a blob with csv contents
const blob = new Blob([csvContent], { type: 'text/csv' });
//create a url to link to csv content blob
const url = URL.createObjectURL(blob);
//create anchor to point to url
const a = document.createElement('a');
a.href = url;
//download the file with date time in name
a.download = `shifts_${postfix}.csv`;
//add the anchor to document, so it can be clicked
document.body.appendChild(a);
//call the click event, so the csv contents can be downloadws
a.click();
//remove the anchor as its purpose is served
document.body.removeChild(a);
}
<button class="mt-1 btn btn-complete btn-cons btnGo" onclick="downloadCSV()">Export</button>
<table class="table" :class="loading ? 'loading' : ''" id="shiftTable">
<thead>
<tr>
<th><span>Employee</span></th>
<th><span>Clocked In</span></th>
<th><span>Clocked Out</span></th>
<th><span >Duration</th>
<th ignore-column="true">Action</th>
</tr>
</thead>
<tbody>
<tr><td>Khurram</td> <td>Tue Oct 08 2024 12:11:00 p.m.</td> <td>Sun Oct 13 2024 8:22:00 p.m.</td> <td>8 hr(s), 11 min(s)</td> <td ignore-column="true"><a href="/Shift/10HYAGKNRFSX2">View</a></td></tr>
<tr><td>Khurram</td> <td>Thu Oct 03 2024 9:12:00 p.m.</td> <td>Thu Oct 03 2024 9:13:00 p.m.</td> <td>0 hr(s), 1 min(s)</td> <td ignore-column="true"><a href="/Shift/WZXZH7AKXBWP8">View</a></td></tr>
</tbody>
</table>
要忽略任何列(有时我们显示更多列,这些列对于 csv 来说毫无用处),请为其添加“ignore-column”属性(参见 html)
要验证 csv 文件内容,您可以使用链接
https://www.convertcsv.com/csv-viewer-editor.htm