扩展grid------RowExpander.js

首先引入JS：RowExpander.js 这个文件可以在ext提供的example/grid找到

Ext.onReady(function(){

    Ext.QuickTips.init();
   
    var xg = Ext.grid;

    // shared reader
    var reader = new Ext.data.ArrayReader({}, [
       {name: 'company'},
       {name: 'price', type: 'float'},
       {name: 'change', type: 'float'},
       {name: 'pctChange', type: 'float'},
       {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'},
       {name: 'industry'},
       {name: 'desc'}
    ]);

    var expander = new xg.RowExpander({
        tpl : new Ext.Template(
            '<p><b>Company:</b> {company}</p><br>',
            '<p><b>Summary:</b> {desc}</p>'
        )
    });

    var grid1 = new xg.GridPanel({
        store: new Ext.data.Store({
            reader: reader,
            data: xg.dummyData
        }),
        cm: new xg.ColumnModel([
           expander,
            {id:'company',header: "Company", width: 40, sortable: true, dataIndex: 'company'},
            {header: "Price", width: 20, sortable: true, renderer: Ext.util.Format.usMoney, dataIndex: 'price'},
            {header: "Change", width: 20, sortable: true, dataIndex: 'change'},
            {header: "% Change", width: 20, sortable: true, dataIndex: 'pctChange'},
            {header: "Last Updated", width: 20, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
        ]),
        viewConfig: {
            forceFit:true
        },
        width: 600,
        height: 300,
       plugins: expander,      
        collapsible: true,
        animCollapse: false,
        title: 'Expander Rows, Collapse and Force Fit',
        iconCls: 'icon-grid',
        renderTo: document.body
    });
});


example/grid/grid3.html看到效果