Workaround of showing a base64 pdf on IE9+

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自闭症患者 2021-02-06 10:55
I would like to convert a PDF to base64 and show on browser.
The problem is , the following code works for Firefox and Chrome
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                <span>(楼主)</span>
            
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                <span>2021-02-06 11:25</span>
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<p>Note: For IE and other browsers like Mozilla, Chrome this works
for me</p>

<pre><code>if (data == "" || data == undefined) {
    alert("Falied to open PDF.");
} else { 
    //For IE using atob convert base64 encoded data to byte array
    if (window.navigator && window.navigator.msSaveOrOpenBlob) {
        var byteCharacters = atob(data);
        var byteNumbers = new Array(byteCharacters.length);
        for (var i = 0; i < byteCharacters.length; i++) {
            byteNumbers[i] = byteCharacters.charCodeAt(i);
        }
        var byteArray = new Uint8Array(byteNumbers);
        var blob = new Blob([byteArray], {
            type: 'application/pdf'
        });
        window.navigator.msSaveOrOpenBlob(blob, fileName);
    } else { 
        // Directly use base 64 encoded data for rest browsers (not IE)
        var base64EncodedPDF = data;
        var dataURI = "data:application/pdf;base64," + base64EncodedPDF1;
        window.open(dataURI, '_blank');
    }
}
</code></pre>
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