[JS] JavaScript 프로젝트에서 스타일 설정 방법 3가지 코드 예시

1. 인라인 스타일

app.style.background = '#000';
app.style.setProperty('background', '#f00');
cssText는 기존에 설정된 inline이 날아감
app.style.cssText = `            
    background: #fff;
    max-width: 500px;
    width: 100%;
    margin: 100px auto;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.1);
`;

app.style.removeProperty('box-shadow');

 

 

2. 스타일 시트

document.styleSheets[0].insertRule(`
#app {
    background: #fff;
    max-width: 500px;
    width: 100%;
    margin: 100px auto;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.1);
}
`);
document.styleSheets[0].deleteRule(0);

app.style.background = '#000';
console.log(app.style.background);

console.log(getComputedStyle(app));

 

 

3. 스타일 시트 동적 생성

const styleSheet = new CSSStyleSheet();
styleSheet.replace(`* {
    margin: 0;
    padding: 0;
}

body {
    height: 100vh;
    background: linear-gradient(180deg,
            #3ac6f3 0%,
            rgba(200, 180, 180, 0.4) 40%,
            rgba(255, 0, 0, 0.56) 100%);
    overflow: hidden;
}


#app {
    background: #fff;
    max-width: 500px;
    width: 100%;
    margin: 100px auto;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.1);
}

#header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#counter span {
    margin-right: 0.5rem;
}

#input-field {
    margin: 20px 0;
    width: 100%;
    display: flex;
    height: 2.5rem;
}

#input-field input {
    width: 85%;
    height: 100%;
    border-radius: 3px;
    border: 1px solid #ccc;
    font-size: 0.8rem;
    padding-left: 15px;
    outline: none;
}

#input-field input:focus {
    border-color: #ff0051;
}

#input-field button {
    width: 50px;
    height: 100%;
    border: none;
    color: #fff;
    margin-left: 5px;
    font-size: 21px;
    outline: none;
    background: #3ac6f3;
    border-radius: 3px;
}

#item-list-container {
    max-height: 250px;
    overflow: scroll;
    scrollbar-width: none;
}

#item-list-container li {
    position: relative;
    display: flex;
    justify-content: space-between;
    list-style: none;
    height: 3rem;
    line-height: 3rem;
    margin-bottom: 0.5rem;
    overflow: hidden;
    border-radius: 5px;
}

#item-list-container div {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

#item-list-container input {
    margin: 1rem;
    transition-duration: 0.5s;
    opacity: 1;
}

#item-list-container button {
    width: 3rem;
    margin: 0.3rem 1rem;
    width: 3rem;
    border: none;
    color: #fff;
    margin-left: 5px;
    font-size: 0.8rem;
    font-weight: bold;
    outline: none;
    background: #f97;
    transition-duration: 0.5s;
    opacity: 1;
}

#item-list-container button:hover {
    background-color: #ddd;
}

#item-list-container span {
    width: 100%;
    text-align: left;
}`);

document.adoptedStyleSheets = [styleSheet];