我正在处理 Javascript 日期，我坚持将日期添加 7 天

Question

 var date = new Date();  var first_date = new Date(date); //Make a copy of the date we want the first and last days from  first_date.setUTCDate(1); //Set the day as the first of the month   var firstDay = first_date.toJSON().substring(0, 10);    console.log(firstDay)我正在处理 Javascript 日期，我坚持在这个日期上添加 7 天

Answer 1

var date = new Date();

var first_date = new Date(date); //Make a copy of the date we want the first and last days from

first_date.setUTCDate(1); //Set the day as the first of the month

 

var firstDay = first_date.toJSON().substring(0, 10);

var resultDate = new Date();

resultDate.setDate(first_date.getDate() + 7);

var resultDay = resultDate.toJSON().substring(0, 10); 

console.log("First day: " + firstDay)

console.log("7 days from specific day: " + resultDay)