常用js函数集合

1.任意格式的时间转换为毫秒数


var dateToTime = function(date){
        //var time = (new Date(date)).getTime();
        var time = (new Date(Date.parse(date.replace(/-/g,"/")))).getTime();//兼容IE
        return time;
    }

2.毫秒数转换为时间,格式为format(例如‘yyyy/MM/dd’)


var timeToDate = function(time,format){
        var t = new Date(time);
        var tf = function(i){return (i < 10 ? '0' : '') + i};
        return format.replace(/yyyy|MM|dd|HH|mm|ss/g, function(a){
            switch(a){
                case 'yyyy':
                    return tf(t.getFullYear());
                    break;
                case 'MM':
                    return tf(t.getMonth() + 1);
                    break;
                case 'mm':
                    return tf(t.getMinutes());
                    break;
                case 'dd':
                    return tf(t.getDate());
                    break;
                case 'HH':
                    return tf(t.getHours());
                    break;
                case 'ss':
                    return tf(t.getSeconds());
                    break;
            }
        })
    }

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