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【每日一練】45—記錄​喝水量動畫效果的實作

【每日一練】45—記錄​喝水量動畫效果的實作

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:

【每日一練】45—記錄​喝水量動畫效果的實作

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。

【每日一練】45—記錄​喝水量動畫效果的實作