Dateidownload aus JavaScript mit Data-URLs

Aufbauend auf dem letztens erschienenen Post zu html2canvas soll es heute nochmal um Data-URLs gehen. Letztens in aller Munde: xlsx.js – mit Javascript Excel-Dateien erstellen und auch wieder auslesen. Zum Experimentieren bieten sich die erstellten jsFiddles zum Erzeugen einer Excel-Datei aus Javascript und dem Einlesen einer Excel-Datei per Javascript an.

Aufbauend auf letztgenanntem Fiddle nun hier folgendes Beispiel:

<script>  function dl()  {  	var content = '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 	return 'data:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;base64,'+ content;  }    window.location = dl();  </script>  

Lädt einfach mal eine Excel-Datei herunter. Das klappt natürlich nur, wenn der Browser mit dem Format nicht zurechtkommt, d.h. es nicht inline darstellen kann. Selbes Beispiel mit einer PNG-Datei:

<script>  function dl()  {  	var content = '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';  	return 'data:image/png;base64,'+ content;  }    window.location = dl();  </script>  

Die wird dann einfach dargestellt. Aber ist ja auch schon was. Klappt in Chrome und Firefox, leider nicht im IE.