View pdf instead of download using PDF js - laravel

Question

In my page, I'm trying to display a thumbnails of my pdf using PDF JS and it works on local, but when I upload my code in my webserver the pdf file is auto download.
In my local :
Code :
$(function() {
var filePath = "http://example.com/public/uploads/docs/Document_One_1.pdf";
function Num(num) {
var num = num;
return function () {
return num;
}
};
function renderPDF(url, canvasContainer, options) {
var options = options || {
scale: 1.1
},
func,
pdfDoc,
def = $.Deferred(),
promise = $.Deferred().resolve().promise(),
width,
height,
makeRunner = function(func, args) {
return function() {
return func.call(null, args);
};
};
function renderPage(num) {
var def = $.Deferred(),
currPageNum = new Num(num);
pdfDoc.getPage(currPageNum()).then(function(page) {
var viewport = page.getViewport(options.scale);
var canvas = document.createElement("canvas");
canvas.setAttribute("id","pdfCanvas"+num);
canvas.setAttribute("onclick","popCanvas('{{url('/dashboard/showcanvas')}}','"+document.getElementById('pdfPath').innerHTML+"','"+num+"');");
var ctx = canvas.getContext('2d');
var renderContext = {
canvasContext: ctx,
viewport: viewport
};
if(currPageNum() === 1) {
height = viewport.height;
width = viewport.width;
}
canvas.height = height;
canvas.width = width;
canvasContainer.appendChild(canvas);
page.render(renderContext).then(function() {
def.resolve();
});
})
return def.promise();
}
function renderPages(data) {
pdfDoc = data;
var pagesCount = pdfDoc.numPages;
for (var i = 1; i <= pagesCount; i++) {
func = renderPage;
promise = promise.then(makeRunner(func, i));
}
}
PDFJS.disableWorker = true;
PDFJS.getDocument(url).then(renderPages);
};
var body = document.getElementById("bodyofpdf");
renderPDF(filePath, body);
});
When I change the filepath url, for example: "https://www.tutorialspoint.com/bootstrap/bootstrap_tutorial.pdf", it works.
Can somebody help me ??
Sorry for my poor english.

Answer 1

If you are using Laravel you can control the behaviour of the routes, including the one to a .pdf. For local files, browsers have a different behaviour by default than for no local files.
I have used a lot PDF.js and I don't know why do you link the user directly to the file, you could create like a view page where it gets a parameter like the id or the name of the book and then you load it with pdf.js. If you use an url with a file extension you will probably confuse the browser.
yourpage.com/books/view/{id_book}