Why file open dialog opens twice on clicking the button in FireFox
问题 I have a file <input> field and a <span> decorates the input field: <span class="span5 btn btn-primary btn-file" id="chose_files_btn" onclick="filechose_button.click()">chose files <input id="filechose_button" type="file" name="fileData" size="1" style="display: none"/> </span> While the behavior of this is as I suppose in Chrome and Safari , FireFox opens two file input dialogs on clicking the button(span) . Why could happen so? I assume, that file input field is invisible and only access to