Javascript——dom常用操作-- date操作

var Dates = {
//补位
digit: function (m) {
return +m < 10 ? '0' + m : m;
},
//日期格式化可date可是数组也可以是字符串
parse: function (date, format) {
var _index = 0;
if (typeof date == 'string') date = this.toarry(date);
if (date == null) return '';
//console.log(date);
format = format || 'YYYY-MM-dd HH:mm:ss';
return format.replace(/YYYY|MM|dd|HH|mm|ss/g, function (str, index, s) {
return Dates.digit(date[_index++]);
});
},
//获指定日期
now: function (timestamp, format) {
var _parsestr, _date = new Date((timestamp | 0) ? function () {
var _datenow = new Date();
if (timestamp >= 86400000) {
return timestamp + _datenow.getHours() * 3600000 + _datenow.getMinutes() * 60000 + _datenow.getSeconds() * 1000;
}
return 86400000 * timestamp + _datenow.getTime();
}(timestamp) : new Date);
_parsestr = [_date.getFullYear(), (_date.getMonth() + 1), _date.getDate(), _date.getHours(), _date.getMinutes(), _date.getSeconds()];
return {
//返回字符串
Totime: this.parse(_parsestr, format),
//返回数组
Toarry: _parsestr
};
},
//日期序列化
toarry: function (timestr) {
var aryy = this.Isdate(timestr, true);//日期正确返回日期数组[YYYY,MM,dd,HH,mm,ss]
if (!aryy) return null;
return aryy;
},
//验证日期,设置第二个参数可以返回现在日期数组[YYYY,MM,dd,HH,mm,ss]
Isdate: function (datestr, isreturn) {
var _DateReg = /^((\d{4})(-|\/)(\d{1,2})\3(\d{1,2}))( (\d{1,2}):(\d{1,2}):(\d{1,2}))?$/,//2015-1-43 3:3:44||2015-1-43 99:99:99
_Date,
_result,
_YYYY, _MM, _dd, _HH = 0, _mm = 0, _ss = 0, _istrue = false;
if (_DateReg.test(datestr)) {//验证格式正确
_result = _DateReg.exec(datestr);//datestr.match(reg);
//console.log(_result);
if (_result == null) return false;
_YYYY = _result[2];
_MM = +_result[4] - 1;
_dd = _result[5];
if (_result[6] != undefined && _result[6] != '') {
_HH = _result[7];
_mm = _result[8];
_ss = _result[9];
}
_Date = new Date(_YYYY, _MM, _dd, _HH, _mm, _ss);
_istrue = (_Date.getFullYear() == _YYYY && _Date.getMonth() == _MM && _Date.getDate() == _dd && _Date.getHours() == _HH && _Date.getMinutes() == _mm && _Date.getSeconds() == _ss);
return (_istrue && (isreturn && [_YYYY, (_MM + 1), _dd, _HH, _mm, _ss])) || _istrue;
}
else {
return false;
}
},
//润年判断
LeapYear: function (year) {
if ((year % 100 == 0 && year % 400 == 0) || year % 4 == 0) return true;
return false;
}
};

//公共方法
var Common = {
each: function (arrydom, fn) {
var len = arrydom.length;
for (var i = 0; i < len; i++) {
if (typeof fn == 'function') {
fn.call(arrydom[i]);
}
}
},
//绑定事件
on: function (dom, even, fn) {
dom.attachEvent ? dom.attachEvent('on' + even, function (e) {
e = e || window.event;
fn.call(dom, e);
}) : dom.addEventListener(even, function (e) {
e = e || window.event;
fn.call(dom, e);
}, false);
},
//获得属性
attr: function (dom, attr, val) {
var str = '', s;
if (val) {
dom.setAttribute(this.trim(attr), val);
attr.toLowerCase() == 'class' && (dom.className = val);
attr.toLowerCase() == 'style' && (dom.style.cssText = val);
}
else {
s = dom.getAttribute(attr);
str = s;
attr.toLowerCase() == 'class' && (str = dom.className);
attr.toLowerCase() == 'style' && (str = dom.style.cssText);
return this.trim(str);
}
},
//删除属性
removeattr: function (dom, attr) {
dom.removeAttribute(attr);
},
//判断是否存在class
hasClass: function (dom, str) {
return new RegExp('\\b' + str + '\\b').test(dom.className);
},
//添加class
addClass: function (dom, cls) {
this.hasClass(dom, cls) || (dom.className += ' ' + cls);
dom.className = this.trim(dom.className);
},
//删除class
removeClass: function (dom, cls) {
var c = this.trim(cls), reg = new RegExp('\\b' + c + '\\b');

if (this.hasClass(dom, c)) {
dom.className = this.trim(dom.className.replace(reg, ''));
}
},
//去除前后空格
trim: function (s) {//去除多于空格
s = s || '';
return s.replace(/^\s*|\s*$/g, '');
}
};