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can't get html5 download to work programmatically. (Works on Chrome.)

  • 7 απαντήσεις
  • 1 έχει αυτό το πρόβλημα
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  • Τελευταία απάντηση από jpaxtons

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Example code:

var filenamepath ="http://oihelp.com/Julio Iglesias - Corazón Partío.mp3"
var filename = "Julio Iglesias - Corazón Partío.mp3"
download(filenamepath,filename)

function download(filenamepath, filename) {
     var pom = document.createElement('a');
     pom.setAttribute('href', 'data:text/plain;charset=utf-8,' + (filenamepath))
     pom.setAttribute('download', filename);
     pom.click();
}

On Chrome, download occurs. (Julio Iglesias - Corazón Partío.mp3) On Firefox, nothing happens and can find no errors. Do not know where to look for resolution.

An html link like this:
<a href="http://oihelp.com/Julio Iglesias - Corazón Partío.mp3" download="Julio Iglesias - Corazón Partío.mp3">Download local utf-8 file by link click </a>

works fine. (both Chrome and Firefox)


edited the title of this thread

Example code: <pre><nowiki>var filenamepath ="http://oihelp.com/Julio Iglesias - Corazón Partío.mp3" var filename = "Julio Iglesias - Corazón Partío.mp3" download(filenamepath,filename) function download(filenamepath, filename) { var pom = document.createElement('a'); pom.setAttribute('href', 'data:text/plain;charset=utf-8,' + (filenamepath)) pom.setAttribute('download', filename); pom.click(); }</nowiki></pre> On Chrome, download occurs. (Julio Iglesias - Corazón Partío.mp3) On Firefox, nothing happens and can find no errors. Do not know where to look for resolution. <pre><nowiki>An html link like this: <a href="http://oihelp.com/Julio Iglesias - Corazón Partío.mp3" download="Julio Iglesias - Corazón Partío.mp3">Download local utf-8 file by link click </a></nowiki></pre> works fine. (both Chrome and Firefox) ''edited the title of this thread''

Τροποποιήθηκε στις από το χρήστη the-edmeister

Επιλεγμένη λύση

I was already suspecting something like that.
You only create the element, but aren't placing it in the DOM (e.g. document.body.appendChild(pom)) and in that case the click probably doesn't work.

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Well, I wish I could edit my post! First, the title is wrong.. should be programmatically not problematically

Anyhow. Also, missing a ; after the ...mp3";

Also, I have tried "encodeURIComponent(filename)" but made no difference (Chrome worked, Firefox did not).

I'm guessing a different parameter in place of 'data:text/plain' might help, but so far have not found it.

Thanks, Have fun, Paxton

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Did you try to escape the spaces in the name as %20 (%2520).

It is usually best to avoid spaces and use underscores instead.

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Thank you. Perhaps you did not see my edited note. Not only escaped, but did the full URI encoding. Note: works without escaping when using the link .

So, must be something else. Thanks for the thought.

Have fun, Paxton

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Greetings! For what it is worth, for anyone following my saga, the problem seems to be the creation of the ancher <a> element.

I find that if the element is created in the html page and made hidden and given an id then I can set the href and download attributes and use click() to activate the link and commence the download.

No % escaping of the filenames required even for utf-8 characters. In fact the download attribute wants to contain the exact filename the user will save on his machine.

So, with a previosly created anchor element with an id of dllink....

           var filenamePath = "http://oihelp.com/Julio Iglesias - Día a Día.mp3";
           var filenameDisplay = "Julio Iglesias - Día a Día.mp3";
           document.getElementById("dllink").href = filenamePath;
           document.getElementById("dllink").download = filenameDisplay;
           var obj = document.getElementById("dllink");
           obj.click();

Works just fine. and this works in Chrome but does nothing in Firefox.

           var filenamePath = "http://oihelp.com/Julio Iglesias - Día a Día.mp3";
           var filenameDisplay = "Julio Iglesias - Día a Día.mp3";
           var pom = document.createElement('a');
           pom.href = filenamePath;
           pom.download = filenameDisplay; //works in chrome, not FF
           pom.click();
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Επιλεγμένη λύση

I was already suspecting something like that.
You only create the element, but aren't placing it in the DOM (e.g. document.body.appendChild(pom)) and in that case the click probably doesn't work.

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Bingo!

Should have seen that. It works just fine. It looks like Chrome is allowing me to be sloppy :-)

Paxton

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Greetings!

For anyone that is following this, this works to download utf-8 filenames....

var filenamePath = "http://oihelp.com/Julio Iglesias - Día a Día.mp3";
 var filenameDisplay = "Julio Iglesias - Día a Día.mp3";
 var pom = document.createElement('a');
 document.body.appendChild(pom); //required in FF, optional for Chrome
          pom.href = filenamePath;
          pom.download = filenameDisplay;
          pom.target="_self" ; //required in FF, optional for Chrome
          pom.click();


Have fun.