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JS FileReader & input type="file"
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The input element with a type attribute whose value is "file" represents a list of file items, each consisting of a file name, a file type, and a file body (the contents of the file). | |
http://www.w3.org/TR/html-markup/input.file.html | |
http://msdn.microsoft.com/en-us/library/windows/apps/hh466145.aspx | |
Read Text Files Using the JavaScript FileReader | |
http://www.htmlgoodies.com/beyond/javascript/read-text-files-using-the-javascript-filereader.html | |
READONLY information for an individual file such as its name, size, mimetype, and a reference to the file handle. Adding the "multiple" attribute to the file input element (as in <input type="file" multiple/> will get you a list of files | |
<input type="file"/> | |
input always returns a FileList object | |
Whether you include the multiple attribute or not, the file input always returns a FileList object, which is a simple array of individually selected files from the underlying system. Like any array, it is zero based, so files[0] gets the first one. | |
To check for browser support, do not use: | |
{ | |
//do your stuff! | |
} | |
Instead, do: | |
// Check for the various File API support. | |
if (window.File && window.FileReader && window.FileList && window.Blob) { | |
//do your stuff! | |
} else { | |
alert('The File APIs are not fully supported by your browser.'); | |
} | |
Of course, you can always use Modernizr too. |
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