每日CSS_仿蘋果平滑開關按鈕
2020_12_24
1. 代碼解析
1.1 html 代碼解析
<div class="checkbox">
<div class="inner" id="inner">
<div class="toggle" id="toggle"></div>
</div>
</div>
最外層 checkbox, 是按鈕的整體, inner 是ON下綠色框所占的區域, toggle 是能點擊的 ON 和 OFF 區域.
1.2 css 代碼解析
- 設置 body 字體和背景色
body{
margin: 0;
padding: 0;
font-family: sans-serif;
background: #dcdcdc;
}
- 設置按鈕的背景色, 位置, 圓形邊框, 上下邊框顏色和厚度
.checkbox{
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100px;
height: 50px;
border-radius: 25px;
background: linear-gradient(0deg, #d8d8d8, #cccccc);
border-top: 0.02em solid #ececec;
border-bottom: 0.02em solid #ececec;
}
-
設置 綠色底色區域 的上下左右位置, 以此確定寬度和高度, 注意, 這里沒設寬度和高度, 默認是 auto
設置背景, 圓形邊框, 陰影
.checkbox .inner{
position: absolute;
/* 因為沒設寬和高, 所以可以這樣 */
top: 10px;
left: 10px;
right: 10px;
bottom: 10px;
background: linear-gradient(0deg, #a5a5a5, #717171);
border-radius: 20px;
box-shadow: inset 0 0 15px rgba(0,0,0,.5);
}
- 設置 ON OFF 按鈕大小, 位置, 顏色, 背景, 陰影, 頂部和底部邊框樣式, 設置按鈕上的動畫時間為 0.5s
.checkbox .inner .toggle{
position: absolute;
top: -3px;
left: -3px;
width: 36px;
height: 36px;
border-radius: 50%;
background: linear-gradient(0deg, #ccc, #e4e4e4);
box-shadow: 0 4px 6px rgba(0,0,0,.2);
box-sizing: border-box;
border-top: 0.04em solid #ececec;
border-bottom: 0.01em solid #ececec;
transition: 0.5s;
}
- 設置 OFF 的樣式,, 由上下左右的定位確定 寬和高, 設置背景, 圓形邊框,
line-height用來設置字體垂直居中
.checkbox .inner .toggle:before{
content: "OFF";
position: absolute;
top: 4px;
left: 4px;
right: 4px;
bottom: 4px;
background: linear-gradient(0deg, #e4e4e4, #ccc);
border-radius: 50%;
text-align: center;
font-size: 10px;
line-height: 28px;
color: #a9a9a9;
}
- 設置 點擊后按鈕的字體, ON, 之所有沒有寫其他屬性, 是因為其他屬性都繼承
checkbox .inner .toggle:before
.checkbox .inner.active .toggle:before{
content: "ON";
color: #00d22d;
}
- 當按鈕被點擊, 滑塊右移, 並且更改背景色, 更改時間為 0.5s
.checkbox .inner.active .toggle{
left: 47px;
}
.checkbox .inner.active{
background: linear-gradient(0deg, #00d22d, #158a00);
}
1.3 javascript 代碼解析
<script>
let inner = document.getElementById('inner');
let toggle = inner.children[0];
toggle.addEventListener('click', ()=>{
if(inner.classList.contains('active')){
inner.classList.remove('active');
}else {
inner.classList.add('active');
}
})
</script>
- 首先獲取到 inner 和 toggle, 一個背景色框, 一個圓形按鈕
- 給按鈕 toggle 注冊點擊事件, 點擊 ON OFF 按鈕才有效
- 當 inner 處於 active, 也就是 inner 元素包含 active 類, 那就移除, 如果不包含, 那就添加, 反正做一個相反的操作
- 當 inner 處於 active, toggle 會右移, inner 背景色會變換, 在 css中 設置
- 大功告成, 過程如下圖
2. 源碼
2.1 html 源碼
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="2020_12_24.css">
</head>
<body>
<div class="checkbox">
<div class="inner" id="inner">
<div class="toggle" id="toggle"></div>
</div>
</div>
<script>
let inner = document.getElementById('inner');
let toggle = inner.children[0];
toggle.addEventListener('click', ()=>{
if(inner.classList.contains('active')){
inner.classList.remove('active');
}else {
inner.classList.add('active');
}
})
</script>
</body>
</html>
2.2 css 源碼
body{
margin: 0;
padding: 0;
font-family: sans-serif;
background: #dcdcdc;
}
.checkbox{
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100px;
height: 50px;
border-radius: 25px;
background: linear-gradient(0deg, #d8d8d8, #cccccc);
border-top: 0.02em solid #ececec;
border-bottom: 0.02em solid #ececec;
}
.checkbox .inner{
position: absolute;
/* 因為沒設寬和高, 所以可以這樣 */
top: 10px;
left: 10px;
right: 10px;
bottom: 10px;
background: linear-gradient(0deg, #a5a5a5, #717171);
border-radius: 20px;
box-shadow: inset 0 0 15px rgba(0,0,0,.5);
}
.checkbox .inner .toggle{
position: absolute;
top: -3px;
left: -3px;
width: 36px;
height: 36px;
border-radius: 50%;
background: linear-gradient(0deg, #ccc, #e4e4e4);
box-shadow: 0 4px 6px rgba(0,0,0,.2);
box-sizing: border-box;
border-top: 0.04em solid #ececec;
border-bottom: 0.01em solid #ececec;
transition: 0.5s;
}
.checkbox .inner .toggle:before{
content: "OFF";
position: absolute;
top: 4px;
left: 4px;
right: 4px;
bottom: 4px;
background: linear-gradient(0deg, #e4e4e4, #ccc);
border-radius: 50%;
text-align: center;
font-size: 10px;
line-height: 28px;
color: #a9a9a9;
}
.checkbox .inner.active .toggle:before{
content: "ON";
color: #00d22d;
}
.checkbox .inner.active .toggle{
left: 47px;
}
.checkbox .inner.active{
background: linear-gradient(0deg, #00d22d, #158a00);
}