Pdf download functionality in node js

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We are using this code to download the pdf file but we are getting problem. i want when i hit this route then pdf file will download.
But when i hit this api in postman and click on the download button then pdf file download. So i wnat to download the pdf file with data.

What I have tried:

router.get('/demo',function (req,res){
async function getinvoicelist(){

var chunks = [];
var options = { method: 'GET',
url: 'https://api.fortnox.se/3/invoices/31/preview',

request(options, function (error, response, body) {

console.log(body);

});

%PDF-1.4
%��
3 0 obj
<</Length 1438/Filter/FlateDecode>>stream
x��Y�r�6��+�Ɍ3S�xXڭ�h��IM��STB�n>�_�/p~!�^<H��N�xti��}��T�,��&k��g��xU|*҂�Gk�JPSH#13�װ�).�?���`��/��

Posted 24-Oct-18 1:54am

coderathore

Updated 25-Oct-18 7:48am

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Mohibur Rashid 24-Oct-18 22:41pm

What's the point of posting pdf file content?

1 solution

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Treat my content as plain text, not as HTML

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Richard Deeming · Answer 1 · 2018-10-25T07:49:00

Downloading files via AJAX requests is tricky. You might be able to use createObjectURL to do this:

JavaScript

request(options, function (error, response) {
    var blob = new Blob([response], { type: 'application/pdf' });
    var url = window.URL.createObjectURL(blob);
    
    var link = document.createElement('a');
    link.href = url;
    link.download = "Preview.pdf";

    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
    
    // Recommended: revoke the object URL after some time to free up resources.
    // There is no way to know when the download is complete.
    setTimeout(function() { window.URL.revokeObjectURL(url); }, 60000);
});

Downloading files from Ajax POST Requests[^]
Javascript - Downloading Files with AJAX and Showing a Progess Bar[^]

Can I use... createObjectURL[^]
Can I use... Blob[^]