前段做报表，要按年月统计结果，之前的报表用的都是这种年月选择框：

，这在弹框里很难看，我在网上查找了很多资料，找到了别人重写的datepicker方法，开始测试没发现什么问题，后来再上线后发现只要到月底，选择偶数月份失去焦点时，输入框里的月份会自动加1，别人数这是extjs的bug，但是总不能因为是bug就不做吧，后来终于在网上查找到了插件代码，才搞定：

1：ext3版本插件

插件代码：

Ext.ux.MonthPickerPlugin = function() {

var picker=null;

var oldDateDefaults=null;

this.init = function(pk) {

picker = pk;

picker.onTriggerClick = picker.onTriggerClick.createSequence(onClick);

picker.getValue = picker.getValue.createInterceptor(setDefaultMonthDay).createSequence(restoreDefaultMonthDay);

picker.beforeBlur = picker.beforeBlur.createInterceptor(setDefaultMonthDay).createSequence(restoreDefaultMonthDay);

};

function setDefaultMonthDay() {

oldDateDefaults = Date.defaults.d;

Date.defaults.d = 1;

return true;

}

function restoreDefaultMonthDay(ret) {

Date.defaults.d = oldDateDefaults;

return ret;

}

function onClick(e, el, opt) {

var p = picker.menu.picker;

p.activeDate = p.activeDate.getFirstDateOfMonth();

if (p.value) {

p.value = p.value.getFirstDateOfMonth();

}

p.showMonthPicker();

if (!p.disabled) {

p.monthPicker.stopFx();

p.monthPicker.show();

// if you want to click,you can the dblclick event change click

p.mun(p.monthPicker, 'click', p.onMonthClick, p);

p.mun(p.monthPicker, 'click', p.onMonthDblClick, p);

p.onMonthClick = p.onMonthClick.createSequence(pickerClick);

p.onMonthDblClick = p.onMonthDblClick.createSequence(pickerDblclick);

p.mon(p.monthPicker, 'click', p.onMonthClick, p);

p.mon(p.monthPicker, 'click', p.onMonthDblClick, p);

}

}

function pickerClick(e, t) {

var el = new Ext.Element(t);

if (el.is('button.x-date-mp-cancel')) {

picker.menu.hide();

} else if(el.is('button.x-date-mp-ok')) {

var p = picker.menu.picker;

p.setValue(p.activeDate);

p.fireEvent('select', p, p.value);

}

}

function pickerDblclick(e, t) {

var el = new Ext.Element(t);

if (el.parent()

&& (el.parent().is('td.x-date-mp-month')

|| el.parent().is('td.x-date-mp-year'))) {

var p = picker.menu.picker;

p.setValue(p.activeDate);

p.fireEvent('select', p, p.value);

}

}

};

Ext.preg('f-monthPickerPlugin', Ext.ux.MonthPickerPlugin);

使用：

new Ext.form.DateField({

renderTo: document.body,

plugins:'monthPickerPlugin',

name:'month',

format: 'Y-m'

});

效果：

/**

*通用JS 同步ajax调用 返回json Object

*

* @param {}

*            urlStr

* @param {}

*            paramsStr 为字符串键值对形式“key=value&key2=value2”

* @return {} 返回json Object

*/

function ajaxSyncCall(urlStr, paramsStr) {

var obj='';

if (window.ActiveXObject) {

obj = new ActiveXObject('Microsoft.XMLHTTP');

} else if (window.XMLHttpRequest) {

obj = new XMLHttpRequest();

}

obj.open('POST', urlStr, false);

obj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

obj.send(paramsStr);

var result = Ext.util.JSON.decode(obj.responseText);

return result;

}