微件:CreatePageForm

<form id="createPageForm" action="" method="get">

     <input type="hidden" name="action" value="edit">
     <label for="pageTitle">页面标题:</label>
     <input type="text" id="pageTitle" name="title" required>
     <input type="submit" value="创建页面">

</form>

<script>

   document.getElementById('createPageForm').onsubmit = function() {
     var title = document.getElementById('pageTitle').value;
     this.action = mw.util.getUrl(title);
   };

</script>