JavaScript - export HTML table data into Excel

javascript html excel export-to-excel

34,429

I recommend another Format method. the John Resig micro-template is a very good and simple tool for do what you need. (ejohn microtemplating)

(function(){
  var cache = {};

  this.tmpl = function tmpl(str, data){
    // Figure out if we're getting a template, or if we need to
    // load the template - and be sure to cache the result.
    var fn = !/\W/.test(str) ?
      cache[str] = cache[str] ||
        tmpl(document.getElementById(str).innerHTML) :

      // Generate a reusable function that will serve as a template
      // generator (and which will be cached).
      new Function("obj",
        "var p=[],print=function(){p.push.apply(p,arguments);};" +

        // Introduce the data as local variables using with(){}
        "with(obj){p.push('" +

        // Convert the template into pure JavaScript
        str.replace(/[\r\t\n]/g, " ")
              .split("{{").join("\t")
              .replace(/((^|}})[^\t]*)'/g, "$1\r")
              .replace(/\t=(.*?)}}/g, "',$1,'")
              .split("\t").join("');")
              .split("}}").join("p.push('")
              .split("\r").join("\\'")
              + "');}return p.join('');");

    // Provide some basic currying to the user
    return data ? fn( data ) : fn;
  };
})();

It is very simple to use. This allows not only show variables between HTML but also execute JavaScript code

Your template string need some modification to work with this microtemplate.

{{for(var i=0; i<tables.length;i++){ }}
    <table>
        {{=tables[i]}}
    </table>
{{ } }}

finally only need to select all the tables that appear in your example

document.getElementsByTagName("table");

you can see how it works http://jsfiddle.net/Scipion/P8rpn/1/

34,429

Author by

shockwave

Updated on May 26, 2020

Comments

shockwave almost 4 years

I'm trying to convert HTML tables to Excel, i have tried with a JavaScript function which converts a simple table to Excel, it is working fine. If I have multiple tables how will I be able to add all the table data into the Excel file. here's what I tried. I've created 2 tables and given table index testTable and testTable1.

How will i pass these 2 table ids to the JavaScript function on click of the button? right now on click of the button only the first table is exported to Excel as I'm passing only 'testTable'. how will i be able to export multiple tables eg: testTable, testTable1 into Excel?

Here's the JavaScript:

<script>

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))
}
})()

</script>

Here's the HTML part,

<table id="testTable">
    <thead>
        <tr>
            <th>Name</th>
            <th>ACP</th>
            <th>OEMCP</th>
            <th>Unix<br>
                NT 3.1</th>
            <th>Unix<br>
                NT 3.51</th>
            <th>Unix<br>
                95</th>
        </tr>
    </thead>
</table>
<table id="testTable1">
    <thead>
        <tr>
            <th>Name</th>
            <th>ACP</th>
            <th>OEMCP</th>
            <th>Windows<br>
                NT 3.1</th>
            <th>Windows<br>
                NT 3.51</th>
            <th>Windows<br>
                95</th>
        </tr>
    </thead>
</table>

Please let me know, how this can be done?
Thanks

shockwave about 11 years

How will I pass multiple tableIDs?
shockwave about 11 years

Thanks a ton Scipion! I just wanted to know if I can do this functionality on click of a html button...I tried with this <input type="button" onclick="tableToExcel(document.getElementsByTagName("table")‌,"one")" value="Export to Excel"> but this ain't working....How is it working on jsFiddle? If I implement the same in html I'm not able to get the file on click of the button. Kindly let me know if this is possible.
Scipion about 11 years

try <button id="btn">Download</button> and to add it the click event. function download(){ tableToExcel(document.getElementsByTagName("table"), "one"); } var btn = document.getElementById("btn"); btn.addEventListener("click",download); jsfiddle.net/Scipion/P8rpn/3
shockwave about 11 years

hey, the file is getting downloaded as 'download.xls'; how can I change the name of the download file?
Scipion about 11 years

In chrome is the default name. For use another name you can use a third party solution stackoverflow.com/questions/13912198/…
user3771102 over 9 years

@Scipion I have tried your code in here and I can successfully export it in the excel file but there are some unnecessary characters shown after the table. See this image