"구멍"이있는 반투명 오버레이를 표시하는 React 패키지가 있습니까?

Question

특정 요소에 대해을 제외한 전체 창 앞에 반투명 회색 오버레이 (또는 마스크?)를 그려서 페이지의 임의의 HTML 요소에 대해주의를 기울이고 싶습니다. 즉, 특정 요소의 경계에서 오버레이에 "구멍"이있을 것입니다.

나는 요소가있을 사전을 알 수 없으므로 오버레이를 동적으로 생성해야합니다.

모양이 직사각형이어야하는 것이 맞습니다.

깜박이는 빨간색 점이 올라 오면 react-joyride에 react-joyride demo의 React 패키지 react-joyride에서이 동작의 예가 표시됩니다.

이

Answer 1

아니 반응 구성 요소를 (내가 과거에 일을 찾고 있었다 어떤을 찾을 수 없습니다) (이, 사람이이 개념의 이름에 대한 통찰력을 가지고?에 대한 구글 힘든 일입니다)하지만, 이것은 당신에게 해당 기능 생성하는 방법의 일반적인 아이디어를 제공해야합니다 : 어떤 패키지를 반응에 대해

overlay = document.getElementById('overlay'); 
 
overlay.style.height = document.body.scrollHeight + 'px'; 
 
overlay.querySelector('.bottom').style.height = (document.body.scrollHeight - 400) + 'px';

html, body { 
 
    padding: 0; 
 
    margin: 0; 
 
} 
 
h1, h2, h3, p { 
 
    margin: 0; 
 
    padding: 15px 0; 
 
} 
 

 
.overlay { 
 
    position: absolute; 
 
    width: 100%; 
 
    min-height: 100%; 
 
    left: 0; 
 
    top: 0; 
 
    z-index: 1000; 
 
} 
 
.overlay div { 
 
    background: rgba(0, 0, 0, 0.3); 
 
    position: absolute; 
 
    width: 100%; 
 
    height: 100%; 
 
} 
 
.overlay .top { 
 
    height: 200px; 
 
    top: 0; 
 
} 
 
.overlay .middle { 
 
    height: 200px; 
 
    top: 200px; 
 
    background: none; 
 
} 
 
.overlay .middle .left { 
 
    width: 150px; 
 
} 
 
.overlay .middle .center { 
 
    width: 200px; 
 
    height: 200px; 
 
    margin: 0 auto; 
 
    overflow: hidden; 
 
    left: 150px; 
 
    background: none; 
 
} 
 
.overlay .middle .center:after { 
 
    content: ''; 
 
    position: absolute; 
 
    left: 0px; 
 
    top: 0; 
 
    border-radius: 100%; 
 
    width: 200px; 
 
    height: 200px; 
 
    box-shadow: 0px 0px 0px 100px rgba(0, 0 ,0, 0.3); 
 
} 
 
.overlay .middle .right { 
 
    width: calc(100% - 150px - 200px); 
 
    left: calc(150px + 200px); 
 
} 
 
.overlay .bottom { 
 
    top: calc(200px + 200px); 
 
}

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</div> 
 
<div id="overlay" class="overlay"> 
 
    <div class="top"></div> 
 
    <div class="middle"> 
 
    <div class="left"></div> 
 
    <div class="center"></div> 
 
    <div class="right"></div> 
 
    </div> 
 
    <div class="bottom"></div> 
 
</div>