demo预览
<!--
* @Author: Gavin itxuelei@gmail.com
* @Date: 2021-02-26 11:50:08
* @LastEditors: Gavin itxuelei@gmail.com
* @LastEditTime: 2021-03-08 11:46:45
* @Description:
-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>选择时间</title>
<script src="https://www.jq22.com/jquery/jquery-3.3.1.js"></script>
</head>
<body style=" 300px;margin: 40px auto;">
<select id="selectpicker" onchange="setEnd()">
<option value="0">10</option>
<option value="1">30</option>
<option value="2">半年</option>
<option value="3">一年</option>
</select>
<br>
<br>
<input type="text" id="start" placeholder="开始时间" disabled>
<br>
<br>
<input type="text" id="end" placeholder="结束时间" disabled>
</body>
<script>
$("#selectpicker").val('2');
var dayArr = [10, 30, 180, 365]
// 获取当前时间
var current = dateFormatter(new Date().valueOf()) //默认开始
// 开始时间
$("#start").val(current)
setEnd()
function setEnd() {
var i = $("#selectpicker").val();
console.log(i)
var endTime = dateFormatter(new Date().valueOf() + dayArr[i] * 86400 * 1000)//默认结束
$("#end").val(endTime);
}
// 时间格式
function dateFormatter(value) {
if (value == '' || value == undefined) {
return value;
}
var myDate = new Date(value);
//获取当前年
var year = myDate.getFullYear();
//获取当前月
var month = myDate.getMonth() + 1;
month = month < 10 ? "0" + month : month;
//获取当前日
var date = myDate.getDate();
date = date < 10 ? "0" + date : date;
var h = myDate.getHours(); //获取当前小时数(0-23)
h = h < 10 ? "0" + h : h;
var m = myDate.getMinutes(); //获取当前分钟数(0-59)
m = m < 10 ? "0" + m : m;
var s = myDate.getSeconds();
s = s < 10 ? "0" + s : s;
var time = year + '-' + month + "-" + date;
return time;
}
</script>
</html>
