1、问题描述
在dojo中，日期格式是yyyy-MM-dd，即页面上显示的日期格式；现在，数据库中的日期格式是yyyyMMdd，需要转化一下
2、问题思路
（1）首先，取DateTextBox中的值；
（2）然后，将DateTextBox中显示的值进行截取；
（3）最后，进行字符串组合，组合需要的日期格式。
3、解决步骤
（1）取值
var startDateStr = dijit.byId("startDate").get('displayedValue');
startDateStr.substring(0,4)
startDateStr.substring(5,7)
startDateStr.substring(8,10)
var startDate = startDateStr.substring(0,4)+startDateStr.substring(5,7)+startDateStr.substring(8,10);4、运行结果
（1）初始化
（2）点击查询
5、页面源码
<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width">
<link rel="stylesheet" href="../script/dojoroot/dijit/themes/claro/claro.css"/>
<script type="text/javascript" src="../script/dojoroot/dojo/dojo.js" data-dojo-config="isDebug: true, parseOnLoad: true"></script>
</head>
<body class="claro" role="main">
<div id="div_body">
<table>
<tr>
<td>
<label for="startDate" style="color:#FF0000; font-weight:bold;">统计日期：</label>
<input type="text" id="startDate" data-dojo-id="startDate" data-dojo-type="dijit/form/DateTextBox"
data-dojo-props='type:"text", name:"startDate", required:true,
onChange:function(){ dijit.byId("endDate").constraints.min = this.get("value"); },
constraints:{datePattern:"yyyy-MM-dd"} '/>
</td>
<td>
<button type="button" id="search" data-dojo-type="dijit/form/Button">查询
<script type="dojo/on" data-dojo-event="click" data-dojo-args="evt">
var startDateStr = dijit.byId("startDate").get('displayedValue');
var startDate = startDateStr.substring(0,4)+startDateStr.substring(5,7)+startDateStr.substring(8,10);
alert("统计日期：" + startDate);
</script>
</button>
</td>
</tr>
</table>
</div>
</body>
</html>