[javascript] export html table to csv

A Modern Solution

Most of the proposed solutions here will break with nested tables or other elements inside your td elements. I frequently use other elements inside my tables, but only want to export the topmost table. I took some of the code found here from Calumah and added in some modern vanilla ES6 JS.

Using textContent is a better solution than innerText as innerText will return any HTML inside your td elements. However, even textContent will return the text from nested elements. An even better solution is to use custom data attributes on your td and pull the values for you CSV from there.

Happy coding!

function downloadAsCSV(tableEle, separator = ','){
    let csvRows = []
    //only get direct children of the table in question (thead, tbody)
    Array.from(tableEle.children).forEach(function(node){
        //using scope to only get direct tr of node
        node.querySelectorAll(':scope > tr').forEach(function(tr){
            let csvLine = []
            //again scope to only get direct children
            tr.querySelectorAll(':scope > td').forEach(function(td){
                //clone as to not remove anything from original
                let copytd = td.cloneNode(true)
                let data
                if(copytd.dataset.val) data = copytd.dataset.val.replace(/(\r\n|\n|\r)/gm, '')
                else {
                    Array.from(copytd.children).forEach(function(remove){
                        //remove nested elements before getting text
                        remove.parentNode.removeChild(remove)   
                    })
                    data = copytd.textContent.replace(/(\r\n|\n|\r)/gm, '')
                }
                data = data.replace(/(\s\s)/gm, ' ').replace(/"/g, '""')
                csvLine.push('"'+data+'"')
            })
            csvRows.push(csvLine.join(separator))
        })
    })
    var a = document.createElement("a")
    a.style = "display: none; visibility: hidden" //safari needs visibility hidden
    a.href = 'data:text/csv;charset=utf-8,' + encodeURIComponent(csvRows.join('\n'))
    a.download = 'testfile.csv'
    document.body.appendChild(a)
    a.click()
    a.remove()
}

Edit: cloneNode() updated to cloneNode(true) to get insides

Examples related to javascript

need to add a class to an element How to make a variable accessible outside a function? Hide Signs that Meteor.js was Used How to create a showdown.js markdown extension Please help me convert this script to a simple image slider Highlight Anchor Links when user manually scrolls? Summing radio input values How to execute an action before close metro app WinJS javascript, for loop defines a dynamic variable name Getting all files in directory with ajax

Examples related to jquery

How to make a variable accessible outside a function? Jquery assiging class to th in a table Please help me convert this script to a simple image slider Highlight Anchor Links when user manually scrolls? Getting all files in directory with ajax Bootstrap 4 multiselect dropdown Cross-Origin Read Blocking (CORB) bootstrap 4 file input doesn't show the file name Jquery AJAX: No 'Access-Control-Allow-Origin' header is present on the requested resource how to remove json object key and value.?

Examples related to node.js

Hide Signs that Meteor.js was Used Querying date field in MongoDB with Mongoose SyntaxError: Cannot use import statement outside a module Server Discovery And Monitoring engine is deprecated How to fix ReferenceError: primordials is not defined in node UnhandledPromiseRejectionWarning: This error originated either by throwing inside of an async function without a catch block dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.62.dylib error running php after installing node with brew on Mac internal/modules/cjs/loader.js:582 throw err DeprecationWarning: Buffer() is deprecated due to security and usability issues when I move my script to another server Please run `npm cache clean`

Examples related to html-table

Table column sizing DataTables: Cannot read property 'length' of undefined TypeError: a bytes-like object is required, not 'str' in python and CSV How to get the <td> in HTML tables to fit content, and let a specific <td> fill in the rest How to stick table header(thead) on top while scrolling down the table rows with fixed header(navbar) in bootstrap 3? Sorting table rows according to table header column using javascript or jquery How to make background of table cell transparent How to auto adjust table td width from the content bootstrap responsive table content wrapping How to print table using Javascript?

Examples related to export-to-csv

Excel: macro to export worksheet as CSV file without leaving my current Excel sheet Export to csv/excel from kibana How to export data from Spark SQL to CSV How to export a table dataframe in PySpark to csv? Java - Writing strings to a CSV file How to export dataGridView data Instantly to Excel on button click? Export javascript data to CSV file without server interaction How to create and download a csv file from php script? Export to CSV using jQuery and html export html table to csv