in a form form at the front desk
<form class="form-horizontal">
<div class="form-group">
<label for="imgurl" class="col-sm-2 control-label">:</label>
<div class="col-sm-8">
<input type="file" id="imgurl" style="float: left;">
</div>
</div>
<div class="form-group">
<label for="showimg" class="col-sm-2 control-label"></label>
<div class="col-sm-8">
<div class="previewBox">
<img id="showimg" style="width: 250px;height: 170px;">
</div>
<br><br>
<a class="btn btn-info cropBtn"></a>
</div>
</div>
<div class="form-group">
<label for="title" class="col-sm-2 control-label">:</label>
<div class="col-sm-8">
<input type="text" class="form-control" id="title" value="
<%=articleData.title%>">
</div>
</div></form>
the data sent to the background includes both files (pictures) and plain text data. How should entype be set? do you want to set one point? How should I pass the data in $.ajax ()? How does the backstage (node) accept it? What"s the general idea.