格林威治时间格式(GMT)与普通时间格式的互相转换

function GMTToStr(time){
    var date = new Date(time)
    var Str=date.getFullYear() + ‘-‘ +
    (date.getMonth() + 1) + ‘-‘ + 
    date.getDate() + ‘ ‘ + 
    date.getHours() + ‘:‘ + 
    date.getMinutes() + ‘:‘ + 
    date.getSeconds()
    return Str
}

var today = new Date();
console.log(GMTToStr(today));

function StrToGMT(time){
    var GMT = new Date(time)
    return GMT
}

console.log(this.StrToGMT("2018-3-15 17:55:47"))