寫在前面
天熱多喝水,有利于我們的身體健康,但是,為了保證我們每天喝滿8杯水,共計2000毫升,如果換算成一瓶500毫升的礦泉水的話,那就是,我們每天要喝4瓶水,這麼熱的天,我覺得還是可以完成的,甚至是不夠的。
但是,如果我們為了友善記錄自己每天喝了多少水的話,我們可以通過一個小練習來實作,以下就是我們今天需要練習的内容。
我們先來看一下最終效果:
接下來,再來看一下具體實作代碼。
HTML代碼:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>【每日一練】45—記錄喝水量動畫效果的實作</title>
</head>
<body>
<h1>一天喝8杯水</h1>
<h3>總水量:2升</h3>
<div class="cup">
<div class="remained" id="remained">
<span id="liters"></span>
<small>剩餘水量</small>
</div>
<div class="percentage" id="percentage"></div>
</div>
<p class="text">記錄你的喝水量</p>
<div class="cups">
<div class="cup cup-small">250 ml</div>
<div class="cup cup-small">250 ml</div>
<div class="cup cup-small">250 ml</div>
<div class="cup cup-small">250 ml</div>
<div class="cup cup-small">250 ml</div>
<div class="cup cup-small">250 ml</div>
<div class="cup cup-small">250 ml</div>
<div class="cup cup-small">250 ml</div>
</div>
</body>
</html>
CSS代碼:
:root {
--border-color: #144fc6;
--fill-color: #6ab3f8;
}
* {
box-sizing: border-box;
}
body {
background-color: #3494e4;
color: #fff;
font-family: 'Montserrat', sans-serif;
display: flex;
flex-direction: column;
align-items: center;
margin-bottom: 40px;
}
h1 {
margin: 10px 0 0;
}
h3 {
font-weight: 400;
margin: 10px 0;
}
.cup {
background-color: #fff;
border: 4px solid var(--border-color);
color: var(--border-color);
border-radius: 0 0 40px 40px;
height: 330px;
width: 150px;
margin: 30px 0;
display: flex;
flex-direction: column;
overflow: hidden;
}
.cup.cup-small {
height: 95px;
width: 50px;
border-radius: 0 0 15px 15px;
background-color: rgba(255, 255, 255, 0.9);
cursor: pointer;
font-size: 14px;
align-items: center;
justify-content: center;
text-align: center;
margin: 5px;
transition: 0.3s ease;
}
.cup.cup-small.full {
background-color: var(--fill-color);
color: #fff;
}
.cups {
display: flex;
flex-wrap: wrap;
align-items: center;
justify-content: center;
width: 280px;
}
.remained {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
text-align: center;
flex: 1;
transition: 0.3s ease;
}
.remained span {
font-size: 20px;
font-weight: bold;
}
.remained small {
font-size: 12px;
}
.percentage {
background-color: var(--fill-color);
display: flex;
align-items: center;
justify-content: center;
font-weight: bold;
font-size: 30px;
height: 0;
transition: 0.3s ease;
}
.text {
text-align: center;
margin: 0 0 5px;
}
JS代碼:
const smallCups = document.querySelectorAll('.cup-small')
const liters = document.getElementById('liters')
const percentage = document.getElementById('percentage')
const remained = document.getElementById('remained')
updateBigCup()
smallCups.forEach((cup, idx) => {
cup.addEventListener('click', () => highlightCups(idx))
})
function highlightCups(idx) {
if (idx===7 && smallCups[idx].classList.contains("full")) idx--;
else if(smallCups[idx].classList.contains('full') && !smallCups[idx].nextElementSibling.classList.contains('full')) {
idx--
}
smallCups.forEach((cup, idx2) => {
if(idx2 <= idx) {
cup.classList.add('full')
} else {
cup.classList.remove('full')
}
})
updateBigCup()
}
function updateBigCup() {
const fullCups = document.querySelectorAll('.cup-small.full').length
const totalCups = smallCups.length
if(fullCups === 0) {
percentage.style.visibility = 'hidden'
percentage.style.height = 0
} else {
percentage.style.visibility = 'visible'
percentage.style.height = `${fullCups / totalCups * 330}px`
percentage.innerText = `${fullCups / totalCups * 100}%`
}
if(fullCups === totalCups) {
remained.style.visibility = 'hidden'
remained.style.height = 0
} else {
remained.style.visibility = 'visible'
liters.innerText = `${2 - (250 * fullCups / 1000)}L`
}
}
寫在最後
以上就是今天【每日一練】的全部内容,希望今天的小練習對你有用,如果你覺得有幫助的話,請點贊我,關注我,并将它分享給你身邊做開發的朋友,也許能夠幫助到他。
我是楊小愛,我們明天見。