Extjs优化(一)删除冗余代码提高运行速度

/**
* 获取个GridPanel的选择的记录
*/
function $getGdSelectedIds(grid, idName) {
var selRs = grid.getSelectionModel().getSelections();
var ids = Array();
for (var i = 0; i < selRs.length; i++) {
ids.push(eval("selRs[i].data." + idName));
}
return ids;
}
/**
*删除
*/
function $postDel(a) {
Ext.Msg.confirm("信息确认", "您确认要删除所选记录吗？",
function(b) {
if (b == "yes") {
Ext.getBody().mask("正在删除，请稍等");
Ext.Ajax.request({
url: a.url,
params: {
ids: a.ids
},
timeout: 100000000,//default 30000 milliseconds
method: "POST",
success: function(c, d) {
Ext.getBody().unmask();
Ext.ux.Toast.msg("操作信息", "成功删除该记录！");
if (a.callback) {
a.callback.call(this);
return;
}
if (a.grid) {
a.grid.getStore().reload();
}
},
failure: function(c, d) {
Ext.getBody().unmask();
Ext.ux.Toast.msg("操作信息", "操作出错，请联系管理员！");
}
});
}
});
}
/**
* Gird批量删除操作
*/
function $delGridRs(a) {
var b = $getGdSelectedIds(a.grid, a.idName);
if (b.length == 0) {
Ext.ux.Toast.msg("操作信息", "请选择要删除的记录！");
return;
}
var c = {
url: a.url,
ids: b,
grid: a.grid
};
$postDel(c);
}

var a = Ext.getCmp("PlanBookAllGrid");
//单个删除
$postDel({
url: __ctxPath + "/traincost/multiDelPlanBook.action",
ids: b,
grid: a
});

$delGridRs({
url: __ctxPath + "/traincost/multiDelPlanBook.action",
grid:c.gridPanel,
idName:'mainid'
});