The onclick functionality is not functioning properly within email communications

My JavaScript code contains an AJAX call within Datatables, and this snippet of code is causing an issue:

{   "data": null, 
    "width": "10%",
    "render": function(data){
        icon2 = '<center><button type="button" class="btn btn-info m-btn m-btn--icon m-btn--icon-only btn-sm" ' +
            'data-toggle="m-tooltip" title="" onclick="sendEmail('+data.email+')" data-placement="top" data-original-title="' + 'Send Email' + ' "> <i class="la la-envelope"></i></button>';
        icon2 += '</center>';

    return icon2; }
}

In addition, I have a function defined as follows:

function sendEmail(email){
   console.log("email: ", email);
}

However, upon clicking the button, I encounter the following error message: **Uncaught SyntaxError: missing ) after argument list**.

I am curious if there are any alternative solutions to resolve this issue.

javascriptajaxdatatable

Answer №1

When dealing with literals, it's important to remember that they need to be quoted.

You cannot simply write:

onclick="sendEmail(<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4f2d202d0f2a372e223f232a612c2022">[email protected]</a>)"

A quick workaround is to add a few ' to the data, but this assumes there are no other issues with the data (like containing ', ", or new lines).

The recommended approach is to:

  1. Encode the data as JSON to make it a valid JavaScript literal
  2. Encode special characters in HTML to prevent parsing issues

For example:

const email = data.email;
const js_safe_email = JSON.stringify(email);
const html_safe_email = js_safe_email
     .replace(/&/g, "&amp;")
     .replace(/</g, "&lt;")
     .replace(/>/g, "&gt;")
     .replace(/"/g, "&quot;")
     .replace(/'/g, "&#039;");
icon2 = '<center><button type="button" class="btn btn-info m-btn m-btn--icon m-btn--icon-only btn-sm" ' +
        'data-toggle="m-tooltip" title="" onclick="sendEmail('+html_safe_email+')" data-placement="top" data-original-title="' + 'Send Email' + ' "> <i class="la la-envelope"></i></button>';

While this method may seem messy, it is better than combining strings of data within JS embedded in HTML. It's generally recommended to use DOM methods instead.

Answer №2

Upon closer inspection, the issue seems to lie within the "render": function(data){ segment. While the function itself is properly closed, it appears that the enclosing hash is not.

{   "data": null, 
    "width": "10%",
    "render": function(data){
        icon2 = '<center><button type="button" class="btn btn-info m-btn m-btn--icon m-btn--icon-only btn-sm" ' +
            'data-toggle="m-tooltip" title="" onclick="sendEmail('+data.email+')" data-placement="top" data-original-title="' + 'Send Email' + ' "> <i class="la la-envelope"></i></button>';
        icon2 += '</center>';

    return icon2; }
}

Please take note of the extra } present at the end of the code snippet.

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