EXTJS4.0 3种和后台交互数据的方法

喜欢ヅ旅行 2022-09-26 01:58 164阅读 0赞

1.数据源store   
  
store通常是作为grid的数据源,以便来更新grid的数据.其实这也是它最正规的用法,但其也可以把它作为与后台交互的一种方法,前提是只需向后台发送数据,而不需要接收后台返回的数据.   
    创建一个公共的store,不与任何表有联系,只需要下面简单的几句话   
    var publicstore = Ext.create('Ext.data.Store', \{      
           proxy : \{   
                type : 'ajax',   
                url : ''   
           \}   
      \});   
  
　如果只是想往后台传个数据的话   
　publicstore.proxy.url='a.action?id=1';   
   publicstore.load();   
2.form表单的提交方法   
  表单提交涉及到两种,第一就是单纯的提交表单,把该表单的信息提交到后台action处理,不用任何参数   
  
                       fs.form.submit( \{   
                                        clientValidation : true,   
                                         url : 'saveform.action',   
                                         method : 'POST',   
                                         success : function(form, action) \{                                             
                                         \},   
                                         failure : function(form, action) \{   
                                         \}   
                                     \});   
第二,就是作为后台交互,传输数据,需加上要传输的参数   
                                    fs.form.submit( \{   
                                        clientValidation : true,   
                                         url : 'delbyid.action?id=' + encodeURI(id),   
                                         method : 'POST',   
                                         success : function(form, action) \{                                             
                                         \},   
                                         failure : function(form, action) \{   
                                         \}   
                                     \});   
3.用Ext.Ajax.request   
      这个最简单,最方便,增删改操作都可以用,而且不用估计啥,唯一需要注意的就是网页和项目的编码格式   
                                           Ext.Ajax.request( \{   
                                                         timeout : 3000000,   
                                                         url : 'save.action',   
                                                         params : 'id='+ encodeURI(id)+ '&descr='+ encodeURI(descr) ,   
                                                         success : function(response, config) \{                                                       
                                                         \},   
                                                         failure : function(form, action) \{   
                                                               
                                                         \}   
                                                     \})