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1. 기본값

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Scoped CSS Variables and JS</title>
</head>
<body>
  <h2>Update CSS Variables with <span class='hl'>JS</span></h2>

  <div class="controls">
    <label for="spacing">Spacing:</label>
    <input id="spacing" type="range" name="spacing" min="10" max="200" value="10" data-sizing="px">

    <label for="blur">Blur:</label>
    <input id="blur" type="range" name="blur" min="0" max="25" value="10" data-sizing="px">

    <label for="base">Base Color</label>
    <input id="base" type="color" name="base" value="#ffc600">
  </div>

  <img src="https://source.unsplash.com/7bwQXzbF6KE/800x500">

  <style>

    /*
      misc styles, nothing to do with CSS variables
    */

    body {
      text-align: center;
      background: #193549;
      color: white;
      font-family: 'helvetica neue', sans-serif;
      font-weight: 100;
      font-size: 50px;
    }

    .controls {
      margin-bottom: 50px;
    }

    input {
      width: 100px;
    }
  </style>

  <script>
  </script>

</body>
</html>

2. 결과

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Scoped CSS Variables and JS</title>
  </head>
  <body>
    <h2>Update CSS Variables with <span class="hl">JS</span></h2>

    <div class="controls">
      <label for="spacing">Spacing:</label>
      <input
        id="spacing"
        type="range"
        name="spacing"
        min="10"
        max="200"
        value="10"
        data-sizing="px"
      />

      <label for="blur">Blur:</label>
      <input
        id="blur"
        type="range"
        name="blur"
        min="0"
        max="25"
        value="10"
        data-sizing="px"
      />

      <label for="base">Base Color</label>
      <input id="base" type="color" name="base" value="#ffc600" />
    </div>
    <div class="imgCover">
      <img src="https://source.unsplash.com/7bwQXzbF6KE/800x500" />
    </div>
    <style>
      /*
      misc styles, nothing to do with CSS variables
    */

      body {
        text-align: center;
        background: #193549;
        color: white;
        font-family: "helvetica neue", sans-serif;
        font-weight: 100;
        font-size: 50px;
      }

      .controls {
        margin-bottom: 50px;
      }

      input {
        width: 100px;
      }
      /* 여기서부터 추가 */
      .imgCover {
        width: 800px;
        height: 500px;
        margin: auto;
        background-color: white;
        filter: blur();
      }
    </style>

    <script>
      const imgCover = document.querySelector(".imgCover");
      const blur = document.getElementById("blur");
      const spacing = document.getElementById("spacing");
      const base = document.getElementById("base");
      const hl = document.querySelector(".hl");

      //spacing 설정
      imgCover.style.padding = `${spacing.value}px`;
      spacing.oninput = () => {
        imgCover.style.padding = `${spacing.value}px`;
      };

      //blur설정
      imgCover.style.filter = `blur(${blur.value}px)`;
      blur.oninput = () => {
        imgCover.style.filter = `blur(${blur.value}px)`;
      };

      //background 설정
      imgCover.style.backgroundColor = `${base.value}`;
      hl.style.color = `${base.value}`;
      base.onchange = () => {
        imgCover.style.backgroundColor = `${base.value}`;
        hl.style.color = `${base.value}`;
      };
    </script>
  </body>
</html>

3. 리뷰

input과 change의 차이점 : input은 실시간으로 값을 받아들이지만 change는 마지막값 즉, 결과값만 받아들인다.

 

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