How to handle html5 constraint validation pop-up using Selenium?
问题 The picture says it all. After click on "LOG IN" button, "Please fill out this field." pop-up message appears. It looks like some javascript thing. I want to get text of this pop-up message by using Selenium. Is it even possible ? Here is the html of email input field: <input autocorrect="none" autocapitalize="none" spellcheck="false" autofocus="autofocus" class="cell small-21 form-text required" data-drupal-selector="edit-name" aria-describedby="edit-name--description" type="text" id="edit