js动态创建DataGrid

和上篇一样，使用JS动态的创建DataGrid也是一件非常简单的事情，以项目中的实例来做说明，当然easyui的官网文档也有，例子很简单：

①从后台获取数据

②根据需要显示数据

③根据需要对显示的数据做样式

④对显示的数据做合计

核心代码：

• 从后台获取数据： url:getRootPath()+"/labour/contentDetail.do?headid="+headid

<span style="font-size:18px;">@RequestMapping("/contentDetail.do")@Override@ResponseBodypublic String queryContentDetailByHeaderid(HttpServletRequest request) throws Exception {String headid=CommonUtil.toEmpty(request.getParameter("headid"));List<JobContentDetail> jobContentDetailList=null;JSONObject data = new JSONObject();String json = "";try {jobContentDetailList = labourservice.queryJobcontentMessageByheadid(headid);if(jobContentDetailList != null){ if(!jobContentDetailList.isEmpty()){data.put("rows", JSONArray.fromObject(jobContentDetailList).toString());//调用求和json = sumPrice(headid,jobContentDetailList);}data.put("total", jobContentDetailList.get(0));data.put("footer", json);}} catch (Exception e) {e.printStackTrace();throw new Exception("query error,detail:" +e.getMessage());}return data.toString();}</span>

• 对后台数据做显示:columns

<span style="font-size:18px;">columns:[[ {field:'jobcontentmainid',title:'jobcontentmainid',hidden:true},{field:'productid',title:'productid',hidden:true},{field:'id',title:'id',hidden:true},{field:'subcontractorlabour',title:'subcontractorlabour',hidden:true},{field:'ck',checkbox:true},{field:'opt',title:'opt',width:20,align:'center',formatter:function(value,row,index){ if (row.manuallykeyed == "1") {return "<img src=\""+ getRootPath() +"/component/jquery-easyui/themes/icons/edit_remove.png\" onClick=\"del(this)\"/>";}  }}, {field:'productname',title:'<spring:message code="syspages.workjob.labour.Product"/>',width:250,align:'left'}, {field:'productusage',title:'<spring:message code="syspages.workjob.labour.ProductUsage"/>',width:100,align:'center'},{field:'itemqty',title:'<spring:message code="syspages.workjob.labour.LabourQty"/>',width:60,align:'center',styler: function(index,row){if (row.itemqty==0){return 'background-color:#FFCCCC;';}}},      {field:'buildlabourqty',title:'<spring:message code="syspages.workjob.labour.BuildQty"/>',width:60,align:'center',editor:{type:'numberbox'},styler:function(index,row){var s1="";if (row.id!="footer" && row.builderqty==0){s1= 'background-color:#FFCCCC;';}if(row.id!="footer"){return s1 + s2;}}},{field:'labourunitname',title:'<spring:message code="syspages.workjob.labour.LabourUnit"/>',width:80,align:'center'},{field:'labourfactor',title:'<spring:message code="syspages.workjob.labour.LabourFactor"/>',width:80,align:'center',editor:{type:'numberbox',options:{precision:2}},styler: function(index,row){var s1="";if (row.labourfactor==0){s1 = 'background-color:#FFCCCC;';}if(row.id!="footer"){return s1 + 'border-color:rgb(149,184,231);border-style:solid solid solid solid;border-width: 1px;height:30px;'};}},{field:'labourfactor2',title:'<spring:message code="syspages.workjob.labour.LabourFactor"/>',width:80,align:'center',hidden:true,editor:{type:'numberbox',options:{precision:2}},styler: function(index,row){var s1="";if (row.labourfactor2==0){s1 =  'background-color:#FFCCCC;';}if(row.id!="footer"){return s1 + 'border-color:rgb(149,184,231);border-style:solid solid solid solid;border-width: 1px;height:30px;'};}},{field:'labourfactor3',title:'<spring:message code="syspages.workjob.labour.LabourFactor"/>',width:80,align:'center',hidden:true,editor:{type:'numberbox',options:{precision:2}},styler: function(index,row){var s1="";if (row.labourfactor3==0){s1 = 'background-color:#FFCCCC;';}if(row.id!="footer"){return s1 + 'border-color:rgb(149,184,231);border-style:solid solid solid solid;border-width: 1px;height:30px;'};}},{field:'levelofdifficulty',title:'<spring:message code="syspages.workjob.labour.DegreeofDifficulty"/>',width:80,align:'center',editor:{type:'combobox',options:{data:levelPercentData,valueField: 'id',textField: 'text',panelHeight:'300px',required: true ,  editable:false }},styler:function(index,row){if(row.id!="footer"){return 'border-color:rgb(149,184,231);border-style:solid solid solid none;border-width: 1px;height:30px;'};},formatter:function(value,row,index){ if(row.id == "footer"){return " ";}else{row.levelofdifficulty = value;for(var i=0; i<levelPercentData.length; i++){    if (levelPercentData[i].id == value){return levelPercentData[i].text;    }}    return value;  }}},{field:'manhours',title:'<spring:message code="syspages.workjob.labour.ManHours"/>',width:60,align:'center',styler: function(index,row){if (row.id != "footer" && row.manhours==0){return 'background-color:#FFCCCC;';}}},{field:'labourrate',title:'<spring:message code="syspages.workjob.labour.LabourRate"/>',width:60,align:'center',styler: function(index,row){if (row.id != "footer" && row.labourrate==0){return 'background-color:#FFCCCC;';}},formatter:function(value,row,index){if(row.id == "footer"){return " ";}else{return "$" + value;}    }},       {field:'total',title:'<spring:message code="syspages.workjob.labour.LabourTotal"/>',width:100,align:'center',styler: function(index,row){if (row.id != "footer" && row.total==0){return 'background-color:#FFCCCC;';}},formatter:function(value,row,index){return "$" + value;    }},]] ,</span>

• 对显示数据做样式更改:styler

<span style="font-size:18px;">styler: function(index,row){if (row.id != "footer" && row.total==0){return 'background-color:#FFCCCC;';}},</span>

• 对返回数据做统计:onLoadSuccess:function()

<span style="font-size:18px;">onLoadSuccess:function(data){$('#easydiv'+num).attr("mainid",data.rows[0].jobcontentmainid);var data = $('#easydiv'+num).datagrid('getData');$('#divdiv'+num).css("height",35*(data.rows.length+5));$('#easydiv'+num).datagrid('resize');var rows = $('#easydiv'+num).datagrid('getFooterRows');rows[0]['productusage'] = '<strong> Workers </strong>';rows[0]['itemqty'] = '<strong> Weeks </strong>';rows[0]['buildlabourqty'] = '<strong> Days </strong>';rows[1]['productname'] = '<strong>Own labour Estimate </strong><input TYPE ="checkbox" id="estimate' + num +'" name ="estimate'+ num  +'" onClick="estimate(' + num +')"/>';rows[1]['productusage'] = '<INPUT TYPE="TEXT" value="0"  id="workers' + num +'" name="workers'+num +'" style="width: 100px" onBlur = "caculate(' + num +')" onkeyup="if(isNaN(value))execCommand(\'undo\')" />';rows[1]['itemqty'] = '<INPUT TYPE="TEXT"  value="0"  id="weeks' + num +'" name="weeks'+num +'" style="width: 60px" onBlur = "caculate(' + num +')" onkeyup="if(isNaN(value))execCommand(\'undo\')"/>';rows[1]['buildlabourqty'] = '<INPUT TYPE="TEXT"  value="0" s id="days' + num +'" name="days'+num +'" style="width: 60px" onBlur = "caculate(' + num +')" onkeyup="if(isNaN(value))execCommand(\'undo\')"/>';$('#easydiv'+num).datagrid('reloadFooter');if(data){$.each(data.rows, function(index, item){if(item.subcontractorlabour == 1){$('#easydiv'+num).datagrid('checkRow', index);var $tr = $('#easydiv'+num).prev().find("tr[datagrid-row-index=" + index + "]");$tr.css("background", "#ADD8E6");}});}var sizeOfShowtable = NumOfShowtable.length;NumOfShowtable[sizeOfShowtable] = num;$("[name = ck]:checkbox").bind("click",function () {var flag = $(this).prop("checked");var $tr = $(this).closest("tr");var rowindex = $tr.attr("datagrid-row-index");persubContractor(num,parseInt(rowindex),flag);if (flag) {$tr.css("background", "#ADD8E6");} else {$tr.css("background", "auto");}});}</span>

创建方式：（easyui官方文档）：

• 从现有的表格元素创建DataGrid，在HTML中定义列、行和数据。

<table class="easyui-datagrid">       <thead>           <tr>               <th data-options="field:'code'">编码</th>               <th data-options="field:'name'">名称</th>               <th data-options="field:'price'">价格</th>           </tr>       </thead>       <tbody>           <tr>               <td>001</td><td>name1</td><td>2323</td>           </tr>           <tr>               <td>002</td><td>name2</td><td>4612</td>           </tr>       </tbody>   </table> 

• 通过<table>标签创建DataGrid控件。在表格内使用<th>标签定义列。

<table class="easyui-datagrid" style="width:400px;height:250px"           data-options="url:'datagrid_data.json',fitColumns:true,singleSelect:true">       <thead>           <tr>               <th data-options="field:'code',width:100">编码</th>               <th data-options="field:'name',width:100">名称</th>               <th data-options="field:'price',width:100,align:'right'">价格</th>           </tr>       </thead>   </table>  

• 使用Javascript去创建DataGrid控件。(即：上面介绍的动态创建的方式)。

html:

<span style="font-size:18px;"><table id="dg"></table> </span>

JS：

$('#dg').datagrid({        url:'datagrid_data.json',        columns:[[            {field:'code',title:'Code',width:100},            {field:'name',title:'Name',width:100},            {field:'price',title:'Price',width:100,align:'right'}        ]]    });  

总结：

之前没怎么接触过js代码，所以每次做项目都会有一种恐惧感，每次都想提高，但是每次都会害怕，所以每次都绕道而行。实习总结了一句话：我们都愿意绕着问题跑，可若是绕开了，我们怎么提高啊……