function getExtension(filename) {
var parts = filename.split('.');
return parts[parts.length - 1];
}
function isImage(filename) {
var ext = getExtension(filename);
switch (ext.toLowerCase()) {
case 'jpg':
case 'gif':
case 'bmp':
case 'png':
//etc
return true;
}
return false;
}
function isVideo(filename) {
var ext = getExtension(filename);
switch (ext.toLowerCase()) {
case 'm4v':
case 'avi':
case 'mpg':
case 'mp4':
// etc
return true;
}
return false;
}
javascript Check file type
Source: https://stackoverflow.com/questions/7977084/check-file-type-when-form-submit
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