无法在IE或Firefox中上传文件

Question

目前我正在使用此方法上传文件：

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uploadImage: function(fileToUpload) {
  //clicking the add photo button
  var addMediaModal = element.all(by.css('#px-select-photo')).first();
  browser.executeScript('arguments[0].click()', addMediaModal.getWebElement());
  browser.actions().mouseMove(addMediaModal).click().perform();
  var path = require('path');
  //the file to upload
  var absolutePath = path.resolve(__dirname, fileToUpload)
  var elm = $('input[type="file"]');
  browser.executeScript('var input = $("input:file"); input[0].removeAttribute("class");');
  elm.sendKeys(absolutePath);

},

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仅适用于Chrome。 Firefox和IE打开上传窗口，只是挂起，而chrome完成幕后的一切。

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<span class="ui-button-text"><span class="upload-title">Add Photos</span>
<input style="cursor: pointer;" id="px-select-photo" name="file" class="me-fileUpload" data-label="AddPhotos" data-filetypes="jpg|jpeg|gif|png" data-invalidmessageresource="ErrorUnsupportedPhotoFormat"
multiple="" type="file">
</span>

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