HTML Table to Excel Javascript

HTML Table to Excel Javascript

本文关键字：Javascript Excel to Table HTML      更新时间：2023-09-26

我试图使用这个脚本将html表保存到Excel文件，它工作得很好，但是它没有以正确的名称出现，而是随机字符串。我不明白为什么。

我用:

<input type="button" onclick="tableToExcel('tablename', 'name')" value="Export to Excel">

代码
var tableToExcel = (function() {
var uri = 'data:application/vnd.ms-excel;base64,'
, template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>'
, base64 = function(s) { return window.btoa(unescape(encodeURIComponent(s))) }
, format = function(s, c) { return s.replace(/{('w+)}/g, function(m, p) { return c[p]; }) }
return function(table, name) {
if (!table.nodeType) table = document.getElementById(table)
var ctx = {worksheet: name || 'Worksheet', table: table.innerHTML}
window.location.href = uri + base64(format(template, ctx))
}
})()

对于a锚元素，可以使用现代浏览器支持的download属性。首先通过添加一个不可见的锚来修改你的HTML:

<a id="dlink"  style="display:none;"></a>
<input type="button" onclick="tableToExcel('tablename', 'name', 'myfile.xls')" value="Export to Excel">

还请注意，函数tableToExcel的调用现在有第三个参数-您指定的文件名。

现在使用修改后的原始函数代码:

var tableToExcel = (function () {
        var uri = 'data:application/vnd.ms-excel;base64,'
        , template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>'
        , base64 = function (s) { return window.btoa(unescape(encodeURIComponent(s))) }
        , format = function (s, c) { return s.replace(/{('w+)}/g, function (m, p) { return c[p]; }) }
        return function (table, name, filename) {
            if (!table.nodeType) table = document.getElementById(table)
            var ctx = { worksheet: name || 'Worksheet', table: table.innerHTML }
            document.getElementById("dlink").href = uri + base64(format(template, ctx));
            document.getElementById("dlink").download = filename;
            document.getElementById("dlink").click();
        }
    })()

注意最后3行代码:而不是将URL分配给窗口-他们将其分配给新的锚，然后使用新的download属性强制下载作为给定的文件名，然后简单地调用锚的click()方法。

试一试。

更新-支持utf-8字符

根据下面@WorldSEnder的评论，模板中一个简单的meta标签将使excel支持utf-8字符，如印地语。

template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><meta charset="utf-8"/><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>'

上面的3行代码在我的情况下不起作用，但这里是我发现的，我希望它能有所帮助。

function tableToExcel(table, name, filename) {
        let uri = 'data:application/vnd.ms-excel;base64,', 
        template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><title></title><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--><meta http-equiv="content-type" content="text/plain; charset=UTF-8"/></head><body><table>{table}</table></body></html>', 
        base64 = function(s) { return window.btoa(decodeURIComponent(encodeURIComponent(s))) },         format = function(s, c) { return s.replace(/{('w+)}/g, function(m, p) { return c[p]; })}
        
        if (!table.nodeType) table = document.getElementById(table)
        var ctx = {worksheet: name || 'Worksheet', table: table.innerHTML}
        var link = document.createElement('a');
        link.download = filename;
        link.href = uri + base64(format(template, ctx));
        link.click();
}
<!DOCTYPE html>
<html>
<head>
<style>
table {
    font-family: arial, sans-serif;
    border-collapse: collapse;
    width: 100%;
}
td, th {
    border: 1px solid #dddddd;
    text-align: left;
    padding: 8px;
}
tr:nth-child(even) {
    background-color: #dddddd;
}
</style>
</head>
<body>
<input 
  type="button" 
  onclick="tableToExcel('myTable', 'name', 'myfile.xls')" 
  value="Export to Excel"
>
<table id="myTable">
  <tr>
    <th>Company</th>
    <th>Contact</th>
    <th>Country</th>
  </tr>
  <tr>
    <td>Alfreds Futterkiste</td>
    <td>Maria Anders</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Centro comercial Moctezuma</td>
    <td>Francisco Chang</td>
    <td>Mexico</td>
  </tr>
  <tr>
    <td>Ernst Handel</td>
    <td>Roland Mendel</td>
    <td>Austria</td>
  </tr>
  <tr>
    <td>Island Trading</td>
    <td>Helen Bennett</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Laughing Bacchus Winecellars</td>
    <td>Yoshi Tannamuri</td>
    <td>Canada</td>
  </tr>
  <tr>
    <td>Magazzini Alimentari Riuniti</td>
    <td>Giovanni Rovelli</td>
    <td>Italy</td>
  </tr>
</table>
</body>
</html>

试试这个简单的方法。

把这个按钮放在你想显示导出按钮的任何地方 

<button id="btnExport" onclick="fnExcelReport('myExcelFile.xlsx');" class="btn btn-sm btn-primary"> Export </button>

将这些行添加到页面底部

<script src="https://cdn.jsdelivr.net/gh/linways/table-to-excel@v1.0.4/dist/tableToExcel.js"></script>
<script>
         function fnExcelReport(fileName) {
                    let table = document.getElementsByTagName("table");
                    return TableToExcel.convert(table[0], {
                        name: fileName,
                        sheet: {
                            name: 'Sheet 1'
                        }
                    });
                }
</script>
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