Ajax提交Form表单及文件上传的实例代码

前几天，发现了一些小问题。我在写后台管理页面时，需要上传一张图片。于是我就用很普通的Form表单上传有一段Json串和图片文件；

Form表单上传图片只需要在<form>标签里加上enctype = 'multipart/form-data'，这样是可以上传图片的；

但问题来了，在我进行用Form表单提交的时候直接跳出来提交返回值的页面并且原先的页面刷新；

这样我们可以先到异步的Ajax可以实现局部刷新；

废话不多说了 直接上代码；

首先是html：

<form id = "form_insert" method = "post"><table style = "font-size: 13px; margin: 13px auto;"> <tr><td style = "text-align: right;">类型</td><td>:  <input id = "acttype" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td></tr><tr><td colspan = "2" style = "height: 13px"></td></tr><tr><td style = "text-align: right;">名称</td><td>:  <input id = "actname" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td></tr><tr><td colspan = "2" style = "height: 13px"></td></tr><tr><td style = "text-align: right;">开始时间</td><td>:  <input id = "actstarttime" style = "width:150px" class = "easyui-datetimebox" data-options = "required:true"></td></tr><tr><td colspan = "2" style = "height: 13px"></td></tr><tr><td style = "text-align: right;">结束时间</td><td>:  <input id = "actendtime" style = "width:150px" class = "easyui-datetimebox" data-options = "required:true"></td></tr><tr><td colspan = "2" style = "height: 13px"></td></tr><tr><td style = "text-align: right;">省</td><td>:  <input id ="mem_Province" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td></tr><tr><td colspan="2" style="height: 13px"></td></tr><tr><td style="text-align: right;">市</td><td>:  <input id = "mem_City" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td></tr><tr><td colspan = "2" style = "height: 13px"></td></tr><tr><td style = "text-align: right;">门店</td><td>:  <input id = "mem_Shop" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td></tr><tr><td colspan="2" style="height: 13px"></td></tr><tr><td style = "text-align: right;">具体地址</td><td>:  <input id = "actadd" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td></tr></table></form><form id = "form_sub" style = "font-size: 13px;"><table style="font-size: 13px; margin: 13px auto;"><tr><td style = "text-align: right;">上传图片</td><td>:  <input class = "easyui-filebox" name = 'photo' style = "width:153px" data-options = "required:true,prompt:'选择上传图片',buttonText:' 选 择 '"></td><td><input type = 'text' id = "Item" name = 'item' style = "display:none;"></td></tr></table></form><div style = "text-align:right; padding:2px 5px;"><a id = "sub" class = "easyui-linkbutton" data-options = "iconCls:'icon-ok'" href = "javascript:void(0)">保存</a>    <a class = "easyui-linkbutton" data-options = "iconCls:'icon-quxiao'" href = "javascript:void(0)" onclick = "window_open($('#insert_form'), 'close')">取消</a>    </div>