将JavaScript日期格式设置为yyyy-mm-dd

你可以做：

function formatDate(date) {    var d = new Date(date),        month = '' + (d.getMonth() + 1),        day = '' + d.getDate(),        year = d.getFullYear();    if (month.length < 2)         month = '0' + month;    if (day.length < 2)         day = '0' + day;    return [year, month, day].join('-');}

用法示例：

alert(formatDate('Sun May 11,2019'));

输出：

2019-05-11