JavaScript 常用工具方法

其中 $.extend，$.currDynamicTime 是 jQuery 写法，其他均是 JavaScript 代码。

$.extend({
    // get param
    getParam: function (_key) {
        var _search = location.search;
        if (_search == null || _search.length < 1) {
            return null;
        }
        _search = _search.replace('?', '');
        var _searchArr = _search.split('&');
        for (var _x in _searchArr) {
            var _startIndex = _searchArr[_x].indexOf('=');
            if (_startIndex < 0) {
                continue;
            }
            var _paramKey = _searchArr[_x].substring(0, _startIndex);
            if (_paramKey === _key) {
                return _searchArr[_x].substring(_startIndex).replace('=', '');
            }
        }
        return null;
    },
    // get all param
    getAllParam: function () {
        var _params = {};
        var _search = location.search;
        if (_search == null || _search.length < 1) {
            return _params;
        }
        _search = _search.replace('?', '');
        var _searchArr = _search.split('&');
        for (var _x in _searchArr) {
            var _startIndex = _searchArr[_x].indexOf('=');
            if (_startIndex < 0) {
                continue;
            }
            var _paramKey = _searchArr[_x].substring(0, _startIndex);
            _params[_paramKey] = _searchArr[_x].substring(_startIndex).replace('=', '');
        }
        return _params;
    },
    // set cookie
    setCookie: function (_key, _value, _expireDays, _path) {
        if (typeof _key !== 'string' || _key.trim().length < 1 || !(typeof _value === 'string' || typeof _value === 'number')) {
            return;
        }
        var _str = _key + '=' + _value;
        if (typeof _expireDays === 'number' && _expireDays > 0 && /^\d*$/.test(_expireDays + '')) {
            var _d = new Date();
            _d.setTime(_expireDays * 24 * 60 * 60 * 1000 + _d.getTime());
            _str += '; expires=' + _d.toGMTString();
        }
        if (typeof _path === 'string' && _path.trim().length > 0) {
            _str += '; path=' + _path;
        }
        document.cookie = _str;
    },
    // get cookie
    getCookie: function (_key) {
        if (_key == null || _key.trim().length < 1) {
            return null;
        }
        var cookieStr = document.cookie;
        if (cookieStr == null || cookieStr.length < 1) {
            return null;
        }
        _key += '=';
        var _cookieArr = cookieStr.split(';');
        for (var _x in _cookieArr) {
            if (_cookieArr[_x].indexOf(_key) === 0) {
                return _cookieArr[_x].substring(_key.length);
            }
        }
        return null;
    },
    // del cookie
    delCookie: function (_key, _path) {
        if (typeof _key !== 'string' || _key.trim().length < 1) {
            return;
        }
        var _d = new Date();
        _d.setTime(_d.getTime() - 10000);
        var _str = _key + '=; expires=' + _d.toGMTString();
        if (typeof _path === 'string' && _path.trim().length > 0) {
            _str += '; path=' + _path;
        }
        document.cookie = _str;
    },
    //Executes the current dynamic time
    currDynamicTime: function (_ms, _func) {
        var _dd = new Date(_ms);
        var _year = _dd.getFullYear().toString();
        var _month = (_dd.getMonth() + 1).toString();
        var _date = _dd.getDate().toString();
        var _hours = _dd.getHours().toString();
        var _minutes = _dd.getMinutes().toString();
        var _seconds = _dd.getSeconds().toString();
        if (_month.length === 1) {
            _month = '0' + _month;
        }
        if (_date.length === 1) {
            _date = '0' + _date;
        }
        if (_hours.length === 1) {
            _hours = '0' + _hours;
        }
        if (_minutes.length === 1) {
            _minutes = '0' + _minutes;
        }
        if (_seconds.length === 1) {
            _seconds = '0' + _seconds;
        }
        _func(_year, _month, _date, _hours, _minutes, _seconds);
        setTimeout(function () {
            $.currDynamicTime(_ms + 1000, _func);
        }, 1000);
    }
});