Force download a pdf link using javascript/ajax/jquery

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 7  1985

suppose we have a pdf link \"http://manuals.info.apple.com/en/iphone_user_guide.pdf\"(just for example and to let u know that file is not on my server, i only have the link)

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遇见更好的自我

2020-11-27 05:23
Use the HTML5 "download" attribute
```
<a href="iphone_user_guide.pdf" download="iPhone User's Guide.PDF">click me</a>
```
Warning: as of this writing, does not work in IE/Safari, see: caniuse.com/#search=download

Edit: If you're looking for an actual javascript solution please see lajarre's answer
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小蘑菇

2020-11-27 05:25

Using Javascript you can download like this in a simple method

var oReq = new XMLHttpRequest();
// The Endpoint of your server 
var URLToPDF = "https://mozilla.github.io/pdf.js/web/compressed.tracemonkey-pldi-09.pdf";
// Configure XMLHttpRequest
oReq.open("GET", URLToPDF, true);

// Important to use the blob response type
oReq.responseType = "blob";

// When the file request finishes
// Is up to you, the configuration for error events etc.
oReq.onload = function() {
// Once the file is downloaded, open a new window with the PDF
// Remember to allow the POP-UPS in your browser
var file = new Blob([oReq.response], { 
    type: 'application/pdf' 
});

// Generate file download directly in the browser !
saveAs(file, "mypdffilename.pdf");
};

oReq.send();

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执笔经年

2020-11-27 05:27

With JavaScript it is very difficult if not impossible(?). I would suggest using some sort of code-behind language such as PHP, C#, or Java. If you were to use PHP, you could, in the page your button posts to, do something like this:

<?php
header('Content-type: application/pdf');
header('Content-disposition: attachment; filename=filename.pdf');
readfile("http://manuals.info.apple.com/en/iphone_user_guide.pdf");
?>

This also seems to work for JS (from http://www.phpbuilder.com/board/showthread.php?t=10149735):

<body>
<script>
function downloadme(x){
myTempWindow = window.open(x,'','left=10000,screenX=10000');
myTempWindow.document.execCommand('SaveAs','null','download.pdf');
myTempWindow.close();
}
</script>

<a href=javascript:downloadme('http://manuals.info.apple.com/en/iphone_user_guide.pdf');>Download this pdf</a>
</body>

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轻奢々

2020-11-27 05:30
If htaccess is an option this will make all PDF links download instead of opening in browser
```
<FilesMatch "\.(?i:pdf)$">
  ForceType application/octet-stream
  Header set Content-Disposition attachment
</FilesMatch>
```
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抹茶落季

2020-11-27 05:31

Here is the perfect example of downloading a file using javaScript.

Usage: download_file(fileURL, fileName);

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佛祖请我去吃肉

2020-11-27 05:32

Here is a Javascript solution (for folks like me who were looking for an answer to the title):

function SaveToDisk(fileURL, fileName) {
    // for non-IE
    if (!window.ActiveXObject) {
        var save = document.createElement('a');
        save.href = fileURL;
        save.target = '_blank';
        save.download = fileName || 'unknown';

        var evt = new MouseEvent('click', {
            'view': window,
            'bubbles': true,
            'cancelable': false
        });
        save.dispatchEvent(evt);

        (window.URL || window.webkitURL).revokeObjectURL(save.href);
    }

    // for IE < 11
    else if ( !! window.ActiveXObject && document.execCommand)     {
        var _window = window.open(fileURL, '_blank');
        _window.document.close();
        _window.document.execCommand('SaveAs', true, fileName || fileURL)
        _window.close();
    }
}

source: http://muaz-khan.blogspot.fr/2012/10/save-files-on-disk-using-javascript-or.html

Unfortunately the working for me with IE11, which is not accepting new MouseEvent. I use the following in that case:

//...
try {
    var evt = new MouseEvent(...);
} catch (e) {
    window.open(fileURL, fileName);
}
//...

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