输入界面展示:
输出结果展示:
实现代码:
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<!DOCTYPE html>
<
html
>
<
head
>
<
meta
charset
=
"utf-8"
>
<
title
></
title
>
</
head
>
<
body
>
<
div
>
<!-- 设计输入及点击界面 -->
<
p
>请输入您的出生日期(yyy/mm/dd):</
p
>
<
input
type
=
"text"
style
=
"width: 60px;"
id
=
"year"
>/
<
input
type
=
"text"
style
=
"width: 60px;"
id
=
"month"
>/
<
input
type
=
"text"
style
=
"width: 60px;"
id
=
"day"
></
br
>
<!-- 运用button标签并设置点击事件函数 -->
<
button
style
=
"margin-top:10px "
onclick
=
"getAge()"
>计算</
button
>
</
div
>
<
script
>
//计算周岁年龄的函数
function getAge() {
//定义返回值
var returnAge
//获取输入框参数
var birthYear = document.getElementById("year").value
var birthMonth = document.getElementById("month").value
var birthDay = document.getElementById("day").value
//获取当前时间
d = new Date();
var nowYear = d.getFullYear()
var nowMonth = d.getMonth() + 1
var nowDay = d.getDate()
//计算周岁年龄差
if (nowYear == birthYear) {
returnAge = 0; //同年 则为0岁
} else {
var ageDiff = nowYear - birthYear //年之差
if (ageDiff > 0) {
if (nowMonth == birthMonth) {
var dayDiff = nowDay - birthDay //日之差
if (dayDiff <
0
) {
returnAge
=
ageDiff
- 1
} else {
returnAge
=
ageDiff
}
} else {
var
monthDiff
=
nowMonth
- birthMonth //月之差
if (monthDiff < 0) {
returnAge
=
ageDiff
- 1
} else {
returnAge
=
ageDiff
}
}
} else {
returnAge = -1 //输入有误
}
}
alert(returnAge)//结果弹窗显示
}
</script>
</
body
>
</
html
>
|