Please try below code. The datadrid only show one time, next time it doesn't work. Version 1.5.1 has no this issue.
<script>
function Opentest(){
InitGrid();
$('#dialog').dialog('open').dialog('setTitle', 'Test');
}
function InitGrid(){
$('#grid').datagrid({
singleSelect:true,
collapsible:true,
//url:'datagrid_data1.json',
//method:'get',
columns: [[
{ field: 'itemid', title: 'Item ID' },
{ field: 'productid', title: 'Product' },
{ field: 'listprice', title: 'List Price' },
{ field: 'unitcost', title: 'Unit Cost' },
{ field: 'attr1', title: 'Attribute' },
{ field: 'status', title: 'Status' },
]],
});
$('#grid').datagrid('loadData', { total: 0, rows: [] });
//GridAppend();
}
</script>
</head>
<body>
<div style="padding:5px 0;">
<a href="javascript:Opentest();" class="easyui-linkbutton" data-options="iconCls:'icon-add'">Add</a>
</div>
<div id="dialog" class="easyui-dialog" style="width: 1060px; padding: 1px; overflow-y:scroll; height:auto;" closed="true" resizable="true" modal="true" data-options="iconCls: 'icon-batchadd', buttons: '#dlg-buttons'">
<form id="form" method="post" novalidate="novalidate">
<table id="grid" class="easyui-datagrid" title="Basic DataGrid" style="width:700px;height:250px"></table>
</form>
</div>
</body>
