python 求顧客相鄰兩次購買週期
大家可以先看一下輸入框輸入效果
這個效果需要注意的就是輸入框觸發的時機問題，在輸入框獲取焦點的時候：Name文字會向上移動，輸入框的下邊距會出現。
會用到input標籤的focus和valid
:focus
定義：獲得焦點的元素，一般用於表單(input、textarea);
觸發條件：當用戶點選或觸控元素或通過鍵盤的 “tab” 鍵選擇它時會被觸發。
:valid
定義：偽類指定一個通過匹配正確的所要求的表單元素;
在這裡:valid主要的功能是在input輸入框失去焦點是保持最後的狀態。
下面是程式碼部分：
html部分：
<div class="wrapper"> <div class="input-data"> <input type="text" required="" /> <div class="underline"></div> <label>Name</label> </div> </div>
下面是css程式碼部分
*{ margin: 0; padding: 0; outline: none; box-sizing: border-box; } body{ display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(-135deg,#c850c0,#4158d0); } .wrapper{ width: 450px; background-color: #fff; padding: 30px; box-shadow: 0px 0px 10px rgba(0,0,0,0.1); } .wrapper .input-data{ width: 100%; height: 40px; position: relative; } .wrapper .input-data input{ width: 100%; height: 100%; border: none; border-bottom: 2px solid silver; font-size: 17px; } .input-data input:focus ~ label, .input-data input:valid ~ label{ transform: translateY(-20px); font-size: 15px; color: #4158D0; } .wrapper .input-data label{ position: absolute; bottom: 10px; left: 0; color: grey; pointer-events: none; transition: all 0.3s ease; } .wrapper .input-data .underline{ position: absolute; bottom: 0px; height: 2px; width: 100%; } .input-data .underline:before{ position: absolute; content: ""; height: 100%; width: 100%; background: #4158D0; transform: scaleX(0); transition:transform 0.3s ease; } .input-data input:focus ~ .underline:before, .input-data input:valid ~ .underline:before{ transform: scaleX(1); }
-
*{
margin: 0;
padding: 0;
outline: none;
box-sizing: border-box;
}
body{
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
background: linear-gradient(-135deg,#c850c0,#4158d0);
}
.wrapper{
width: 450px;
background-color: #fff;
padding: 30px;
box-shadow: 0px 0px 10px rgba(0,0,0,0.1);}
.wrapper .input-data{
width: 100%;
height: 40px;
position: relative;
}
.wrapper .input-data input{
width: 100%;
height: 100%;
border: none;
border-bottom: 2px solid silver;
font-size: 17px;
}
.input-data input:focus ~ label,
.input-data input:valid ~ label{
transform: translateY(-20px);
font-size: 15px;
color: #4158D0;
}
.wrapper .input-data label{
position: absolute;
bottom: 10px;
left: 0;
color: grey;
pointer-events: none;
transition: all 0.3s ease;
}
.wrapper .input-data .underline{
position: absolute;
bottom: 0px;
height: 2px;
width: 100%;
}
.input-data .underline:before{
position: absolute;
content: "";
height: 100%;
width: 100%;
background: #4158D0;
transform: scaleX(0);
transition:transform 0.3s ease;
}.input-data input:focus ~ .underline:before,
.input-data input:valid ~ .underline:before{
transform: scaleX(1);
}
下面就是完整的程式碼部分，需要的小夥伴直接複製就可以了。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link rel="stylesheet" type="text/css" href="./css/index.css" />
</head>
<style type="text/css">
*{
margin: 0;
padding: 0;
outline: none;
box-sizing: border-box;
}
body{
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
background: linear-gradient(-135deg,#c850c0,#4158d0);
}
.wrapper{
width: 450px;
background-color: #fff;
padding: 30px;
box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
}
.wrapper .input-data{
width: 100%;
height: 40px;
position: relative;
}
.wrapper .input-data input{
width: 100%;
height: 100%;
border: none;
border-bottom: 2px solid silver;
font-size: 17px;
}
.input-data input:focus ~ label,
.input-data input:valid ~ label{
transform: translateY(-20px);
font-size: 15px;
color: #4158D0;
}
.wrapper .input-data label{
position: absolute;
bottom: 10px;
left: 0;
color: grey;
pointer-events: none;
transition: all 0.3s ease;
}
.wrapper .input-data .underline{
position: absolute;
bottom: 0px;
height: 2px;
width: 100%;
}
.input-data .underline:before{
position: absolute;
content: "";
height: 100%;
width: 100%;
background: #4158D0;
transform: scaleX(0);
transition:transform 0.3s ease;
}
.input-data input:focus ~ .underline:before,
.input-data input:valid ~ .underline:before{
transform: scaleX(1);
}
</style>
<body>
<div class="wrapper">
<div class="input-data">
<input type="text" required="" />
<div class="underline"></div>
<label>Name</label>
</div>
</div>
</body>
</html>
-
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link rel="stylesheet" type="text/css" href="./css/index.css" />
</head>
<style type="text/css">
*{
margin: 0;
padding: 0;
outline: none;
box-sizing: border-box;
}
body{
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
background: linear-gradient(-135deg,#c850c0,#4158d0);
}
.wrapper{
width: 450px;
background-color: #fff;
padding: 30px;
box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
}
.wrapper .input-data{
width: 100%;
height: 40px;
position: relative;
}
.wrapper .input-data input{
width: 100%;
height: 100%;
border: none;
border-bottom: 2px solid silver;
font-size: 17px;
}
.input-data input:focus ~ label,
.input-data input:valid ~ label{
transform: translateY(-20px);
font-size: 15px;
color: #4158D0;
}
.wrapper .input-data label{
position: absolute;
bottom: 10px;
left: 0;
color: grey;
pointer-events: none;
transition: all 0.3s ease;
}
.wrapper .input-data .underline{
position: absolute;
bottom: 0px;
height: 2px;
width: 100%;
}
.input-data .underline:before{
position: absolute;
content: "";
height: 100%;
width: 100%;
background: #4158D0;
transform: scaleX(0);
transition:transform 0.3s ease;
}
.input-data input:focus ~ .underline:before,
.input-data input:valid ~ .underline:before{
transform: scaleX(1);
}
</style>
<body>
<div class="wrapper">
<div class="input-data">
<input type="text" required="" />
<div class="underline"></div>
<label>Name</label>
</div>
</div>
</body>
</html>
最後，整理不易，走過路過的小夥伴們，留個贊再走吧。