Javascript: Uncaught Error: Too many listeners for downloads.onDeterminingFilename -

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here's code:

assets.foreach(function(v) {      var canvas = document.createelement('canvas');     canvas.id     = "canvas";     canvas.width  = 200;     canvas.height = 150;     var ctx = canvas.getcontext("2d");      var img = new image();     img.src = 'file:///path/to/file/' + v.name;     img.onload = function () {         ctx.drawimage(img, 0, 0, img.width, img.height-256, 0, 0, 200, 150);     };     document.getelementbyid('download').addeventlistener('click',         function() {             chrome.downloads.download({                 url: canvas.todataurl()             });              chrome.downloads.ondeterminingfilename.addlistener(                 function(downloaditem, cb) {                     console.log(downloaditem);                     cb({                         filename: 'path/to/file/thumb-' + v.name.split('_')[0] + '.png',                         conflictaction: 'overwrite'                     });                     return true;                 }             );         },     false     ); });

this works if there's 1 file in folder. if more, work single file only. how can figure out work many files?

please note, saves new thumbnail same folder initial image is.

you cannot have more 1 ondeterminingfilename listener:

ondeterminingfilename

during filename determination process, extensions given opportunity override target downloaditem.filename. each extension may not register more 1 listener event.

source


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