基于 HTML、CSS 和 JS 的年龄计算器
- 2021 年 12 月 06 日
本文字数:2499 字
阅读完需:约 8 分钟
JavaScript 提供了一些内置的日期和时间函数,有助于从日期(出生日期)开始计算年龄。使用这些 JavaScript 方法,您可以轻松找到任何人的年龄。为此,我们需要用户输入日期和当前系统日期。
在线演示地址:http://haiyong.site/age-calculator
演示效果
HTML 代码
<div class="container">
<div class="inputs-wrapper">
<input type="date" id="date-input">
<button onclick="ageCalculate()">Calculate</button>
</div>
<div class="outputs-wrapper">
<div>
<span id="years">
-
</span>
<p>
Years
</p>
</div>
<div>
<span id="months">
-
</span>
<p>
Months
</p>
</div>
<div>
<span id="days">
-
</span>
<p>
Days
</p>
</div>
</div>
</div>
<footer class="page-footer">
<span>made by </span>
<a href="http://haiyong.site/moyu" target="_blank">
<img class="touxiang" src="http://haiyong.site/wp-content/uploads/2021/07/cropped-59255587-1-192x192.jpg" alt="George Martsoukos logo">
</a>
</footer>
复制代码
CSS 代码
*,
*:before,
*:after{
padding: 0;
margin: 0;
box-sizing: border-box;
}
body{
background-color: #ff6666;
}
.container{
width: 40%;
min-width: 450px;
position: absolute;
transform: translate(-50%,-50%);
left: 50%;
top: 50%;
padding: 50px 30px;
}
.container *{
font-family: "Poppins",sans-serif;
border: none;
outline: none;
}
.inputs-wrapper{
background-color: #080808;
padding: 30px 25px;
border-radius: 8px;
box-shadow: 0 15px 20px rgba(0,0,0,0.3);
margin-bottom: 50px;
}
input,
button{
height: 50px;
background-color: #ffffff;
color: #080808;
font-weight: 500;
border-radius: 5px;
}
input{
width: 60%;
padding: 0 20px;
font-size: 14px;
}
button{
width: 30%;
float: right;
}
.outputs-wrapper{
width: 100%;
display: flex;
justify-content: space-between;
}
.outputs-wrapper div{
height: 100px;
width: 100px;
background-color: #080808;
border-radius: 5px;
color: #ffffff;
display: grid;
place-items: center;
padding: 20px 0;
box-shadow: 0 15px 20px rgba(0,0,0,0.3);
}
span{
font-size: 30px;
font-weight: 500;
}
p{
font-size: 14px;
color: #707070;
font-weight: 400;
}
.page-footer {
position: fixed;
right: 0;
bottom: 20px;
display: flex;
align-items: center;
padding: 5px;
color: black;
background: rgba(255, 255, 255, 0.65);
}
.page-footer a {
display: flex;
margin-left: 4px;
}
.touxiang{
width:24px;
height:24px;
}
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Javascript
const months = [31,28,31,30,31,30,31,31,30,31,30,31];
function ageCalculate(){
let today = new Date();
let inputDate = new Date(document.getElementById("date-input").value);
let birthMonth,birthDate,birthYear;
let birthDetails = {
date:inputDate.getDate(),
month:inputDate.getMonth()+1,
year:inputDate.getFullYear()
}
let currentYear = today.getFullYear();
let currentMonth = today.getMonth()+1;
let currentDate = today.getDate();
leapChecker(currentYear);
if(
birthDetails.year > currentYear ||
( birthDetails.month > currentMonth && birthDetails.year == currentYear) ||
(birthDetails.date > currentDate && birthDetails.month == currentMonth && birthDetails.year == currentYear)
){
alert("Not Born Yet");
displayResult("-","-","-");
return;
}
birthYear = currentYear - birthDetails.year;
if(currentMonth >= birthDetails.month){
birthMonth = currentMonth - birthDetails.month;
}
else{
birthYear--;
birthMonth = 12 + currentMonth - birthDetails.month;
}
if(currentDate >= birthDetails.date){
birthDate = currentDate - birthDetails.date;
}
else{
birthMonth--;
let days = months[currentMonth - 2];
birthDate = days + currentDate - birthDetails.date;
if(birthMonth < 0){
birthMonth = 11;
birthYear--;
}
}
displayResult(birthDate,birthMonth,birthYear);
}
function displayResult(bDate,bMonth,bYear){
document.getElementById("years").textContent = bYear;
document.getElementById("months").textContent = bMonth;
document.getElementById("days").textContent = bDate;
}
function leapChecker(year){
if(year % 4 == 0 || (year % 100 == 0 && year % 400 == 0)){
months[1] = 29;
}
else{
months[1] = 28;
}
}
复制代码
演示地址
http://haiyong.site/age-calculator
源码下载
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发布于: 2021 年 12 月 06 日阅读数: 18
版权声明: 本文为 InfoQ 作者【海拥(haiyong.site)】的原创文章。
原文链接:【http://xie.infoq.cn/article/45681b17dfa4146101189fec8】。
本文遵守【CC-BY 4.0】协议,转载请保留原文出处及本版权声明。
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