extjs+php 增，删，修，查询的简单实例

 //操作编辑
 var onedit = function(id){
	Ext.onReady(function(){
	  var fs = new Ext.form.FormPanel({
        baseCls: 'x-plain',
        layout:'absolute',
        //url:'grid-filter.php',
        defaultType: 'textfield',
			

        // configure how to read the json Data
        reader : new Ext.data.JsonReader({
            root : 'data',
            successProperty: 'true',			
        },[	    
            'product_name',
		  {name:'product_sell',mapping:'product_sell_price'},
		  {name:'product_purchas',mapping:'product_purchasing_price'}
        ]),

        // reusable eror reader class defined at the end of this file
        //errorReader: new Ext.form.JsonErrorReader(),

        items: [
            new Ext.form.FieldSet({
                title: '产品信息',
                autoHeight: true,
                defaultType: 'textfield',
                items: [
					{
                        fieldLabel: '产品名',
                        name: 'product_name',
                        width:190
                    }, {
                        fieldLabel: '市场价',
                        name: 'product_sell',
                        width:190
                    }, {
                        fieldLabel: '采购价',
                        name: 'product_purchas',
                        width:190
                    }
                ]
            })
        ]
    });

    // explicit add
    var submit = fs.addButton({
        text: '保存',
        handler: function(){
			fs.getForm().submit({
				url:'grid-filter.php?action=update',
				params:{id: id},
				waitMsg:'保存数据中...',
				success:function(){
						Ext.Msg.alert('成功', '修改成功');
						create.hide();
						ds.reload();						
				}
			});
        }
    });
		var create = new Ext.Window({
			
			title: '编辑数据',
			width: 500,
			height:200,
			minWidth: 300,
			minHeight: 200,
			layout: 'fit',
			plain:true,
			bodyStyle:'padding:5px;',
			buttonAlign:'center',
			items: fs,
			
		});
		fs.getForm().load({url:'grid-filter.php?action=edit',params:{id: id},waitMsg:'Loading'});
		create.show();
	});