Created
May 27, 2020 12:18
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<title>Document</title> | |
<style> | |
html.darkmode { | |
background-color: black; | |
color: white; | |
} | |
/* 일반적인 경우(라이트-다크 모드 구분없이) */ | |
#title { | |
color: black; | |
} | |
/* 다크 모드인 경우 */ | |
html.darkmode #title { | |
color: red; | |
} | |
</style> | |
</head> | |
<body> | |
<h3 id="title">title</h3> | |
<p id="light-dark">browser-mode: <span id="current-mode"></span></p> | |
<input type="checkbox" id="chk-user-mode"><label for="chk-user-mode">사용자 지정 다크모드</label> | |
<input type="radio" name="radio-dark" value="dark" disabled> dark <input type="radio" value="light" name="radio-dark" disabled> light | |
<script> | |
function getPrefersDark() { | |
console.log(window.matchMedia('(prefers-color-scheme: Dark)')) | |
return window.matchMedia && window.matchMedia('(prefers-color-scheme: Dark)').matches | |
} | |
function setDarkmode(isOn = true) { | |
const currentMode = document.getElementById("current-mode") | |
if (isOn) { | |
document.getElementsByTagName("html")[0].classList.add("darkmode") | |
currentMode.innerHTML = "dark" | |
} else { | |
document.getElementsByTagName("html")[0].classList.remove("darkmode") | |
currentMode.innerHTML = "light" | |
} | |
} | |
const classList = document.getElementsByTagName("html")[0].classList | |
const prefersDark = getPrefersDark() | |
document.getElementById("title").textContent = prefersDark ? "System: Dark" : "System: Light" | |
const radio = document.querySelectorAll("input[name=radio-dark]") | |
const chkBox = document.querySelector("#chk-user-mode") | |
if (!localStorage.getItem("user-dark")) { | |
localStorage.setItem("user-dark", "no") | |
} | |
if (localStorage.getItem("user-dark") === "no" && prefersDark) { | |
setDarkmode() | |
radio[0].checked = true | |
} else { | |
localStorage.getItem("user-dark") === "dark" ? setDarkmode() : setDarkmode(false) | |
chkBox.checked = true | |
radio.forEach(el => { | |
if (el.value === localStorage.getItem("user-dark")) { | |
el.checked = true | |
} | |
}) | |
} | |
chkBox.onclick = e => { | |
if (e.target.checked) { | |
localStorage.setItem("user-dark", "yes") | |
radio.forEach(el => { | |
el.disabled = false | |
}) | |
} else { | |
localStorage.setItem("user-dark", "no") | |
radio.forEach(el => { | |
el.disabled = true | |
if(prefersDark && el.value === "dark") { | |
el.checked = true | |
} else { | |
el.chekced = true | |
} | |
}) | |
setDarkmode(prefersDark) | |
} | |
} | |
radio.forEach(el => { | |
el.addEventListener("change", e => { | |
if (localStorage.getItem("user-dark") === "no") { | |
return | |
} | |
if (el.value === "dark") { | |
setDarkmode() | |
localStorage.setItem("user-dark", "dark") | |
} else { | |
setDarkmode(false) | |
localStorage.setItem("user-dark", "light") | |
} | |
}) | |
}) | |
</script> | |
</body> | |
</html> |
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