Extjs 如何在分页工具栏中设置动态条数Pageszie 的例子

给大家个思路，版本不同时有些许差异，自己测试了！

var tool_bar_1 = new Ext.PagingToolbar({

pageSize: 50,

store: store,

displayInfo: true,

displayMsg: 'Displaying topics {0} - {1} of {2}',

emptyMsg: "No topics to display",

items: [

{ xtype: 'label', text: 'page size:' },

{ xtype: 'numberfield', width: 35, value: 50, minValue: 1, fieldLabel: 'page size:',

allowBlank: false,

listeners:

{

change: function (Field, newValue, oldValue) {

var num = parseInt(newValue);

if (isNaN(num) || !num || num < 1) {

num = 50;

Field.setValue(num);

}

tool_bar_1.pageSize = num;

}

}

}]

});

var tool_bar = [tool_bar_1, '-', {text:'other button'}];

var grid = new Ext.grid.GridPanel({bbar: tool_bar});