box-sizing:border-box和count-box
时间: 2023-08-19 12:13:20 浏览: 152
box-sizing是一个CSS属性,用于控制盒子模型的计算方式。box-sizing有两个可选值:border-box和content-box。
- 当使用border-box时,盒子的宽度包括了盒子本身的宽度、padding和border的宽度。也就是说,盒子的宽度是指定的宽度,padding和border的宽度不会增加盒子的宽度。[1]
- 当使用content-box时,盒子的宽度只包括盒子本身的宽度,不包括padding和border的宽度。也就是说,盒子的宽度是指定的宽度加上padding和border的宽度。[1]
在给定的例子中,使用了box-sizing: border-box;属性,所以盒子的宽度是50%,包括了盒子本身的宽度、padding和border的宽度。因此,两个盒子都能够在一行显示,占据了父容器的一半宽度。[2]
而count-box这个词在CSS中并没有定义,可能是一个错误的拼写或者误解。在CSS中,正确的值是content-box和border-box。[3]
相关问题
我需要你就帮我优化下面的代码,优化两个按钮的样式<!DOCTYPE html> <html> <head> <meta lang="zn"> <meta charset="utf-8"> <title>文件实验室账号登录</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <style> body { font-family: 楷体; font-size: 1.2rem; padding: 1rem; } form { display: flex; flex-direction: column; align-items: center; width: 100%; max-width: 400px; margin: auto; } label { margin-bottom: 0.5rem; } input[type='email'], input[type='text'] { padding: 0.5rem; margin-bottom: 1rem; border: none; border-bottom: 2px solid #ddd; width: 100%; box-sizing: border-box; font-size: 1.2rem; } button { padding: 0.5rem; border: none; background-color: #007bff; color: #fff; font-size: 1.2rem; cursor: pointer; } button:hover { background-color: #0069d9; } button:disabled { background-color: #ddd; color: #333; cursor: not-allowed; } </style> <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script> </head> <body> <form id="login-form" action="#"> <label for="email">邮箱账号:</label> <input type="email" id="email" name="email" placeholder="在此输入邮箱账号"> <button type="button" id="get-code-btn">获取验证码</button> <label for="code">验证码:</label> <input type="text" id="code" name="code" placeholder="在此输入收到的验证码"> <button type="submit">登录</button> </form> <script> $(function() { $('#get-code-btn').click(function() { var email = $('#email').val(); $.ajax({ url: '/admin/', method: 'POST', data: {email: email}, success: function(data) { if (data.status == 'success') { // 获取验证码成功,开始倒计时 var count = 60; var timer = setInterval(function() { if (count == 0) { clearInterval(timer); $('#get-code-btn').prop('disabled', false).text('获取验证码'); } else { $('#get-code-btn').prop('disabled', true).text(count + '秒后重试'); count--; } }, 1000); } else { alert('获取验证码失败,请重试!'); } }, error: function() { alert('获取验证码失败,请重试!'); } }); }); $('#login-form').submit(function() { var email = $('#email').val(); var code = $('#code').val(); $.ajax({ url: '/response/', method: 'POST', data: {email: email, code: code}, success: function(data) { if (data.status == 'success') { // 验证码校验成功,跳转到目标页面 window.location.href = 'http://spacexs.cn'; } else { alert('验证码错误,请重新输入!'); } }, error: function() { alert('验证码错误,请重试!'); } }); return false; }); }); </script> </body> </html>
以下是代码优化:
1. 将CSS样式重构为BEM命名规范,方便代码维护和拓展;
2. 对于按钮样式,使用CSS变量来定义颜色和字体大小,方便后期修改;
3. 为了更好的用户体验,增加了loading状态,避免用户误操作造成不必要的错误。
```
<!DOCTYPE html>
<html>
<head>
<meta lang="zn">
<meta charset="utf-8">
<title>文件实验室账号登录</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
/* BEM规范*/
.login-form {
font-family: 楷体;
font-size: 1.2rem;
padding: 1rem;
}
.login-form__form {
display: flex;
flex-direction: column;
align-items: center;
width: 100%;
max-width: 400px;
margin: auto;
}
.login-form__label {
margin-bottom: 0.5rem;
}
.login-form__input {
padding: 0.5rem;
margin-bottom: 1rem;
border: none;
border-bottom: 2px solid #ddd;
width: 100%;
box-sizing: border-box;
font-size: 1.2rem;
}
.login-form__button {
padding: 0.5rem;
border: none;
background-color: var(--primary-color, #007bff);
color: var(--button-text-color, #fff);
font-size: var(--button-font-size, 1.2rem);
cursor: pointer;
}
.login-form__button:hover {
background-color: var(--primary-color-hover, #0069d9);
}
.login-form__button:disabled {
background-color: var(--button-disabled-bg-color, #ddd);
color: var(--button-disabled-text-color, #333);
cursor: not-allowed;
}
.login-form__loading {
position: relative;
display: inline-block;
width: 1.5rem;
height: 1.5rem;
border-radius: 50%;
border-top: 3px solid var(--primary-color, #007bff);
border-right: 3px solid var(--primary-color, #007bff);
border-bottom: 3px solid var(--primary-color, #007bff);
border-left: 3px solid transparent;
animation: spin 1s linear infinite;
}
@keyframes spin {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
</style>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
</head>
<body>
<div class="login-form">
<form class="login-form__form" action="#">
<label class="login-form__label" for="email">邮箱账号:</label>
<input class="login-form__input" type="email" id="email" name="email" placeholder="在此输入邮箱账号">
<button class="login-form__button" type="button" id="get-code-btn">获取验证码</button>
<label class="login-form__label" for="code">验证码:</label>
<input class="login-form__input" type="text" id="code" name="code" placeholder="在此输入收到的验证码">
<button class="login-form__button" type="submit" id="login-btn">登录</button>
<div class="login-form__loading" id="loading"></div>
</form>
</div>
<script>
$(function() {
$('#get-code-btn').click(function() {
var email = $('#email').val();
$.ajax({
url: '/admin/',
method: 'POST',
data: {email: email},
beforeSend: function() {
$('#get-code-btn').prop('disabled', true);
$('#loading').show();
},
success: function(data) {
if (data.status == 'success') {
// 获取验证码成功,开始倒计时
var count = 60;
var timer = setInterval(function() {
if (count == 0) {
clearInterval(timer);
$('#get-code-btn').prop('disabled', false).text('获取验证码');
} else {
$('#get-code-btn').prop('disabled', true).text(count + '秒后重试');
count--;
}
}, 1000);
} else {
alert('获取验证码失败,请重试!');
}
},
error: function() {
alert('获取验证码失败,请重试!');
},
complete: function() {
$('#loading').hide();
$('#get-code-btn').prop('disabled', false);
}
});
});
$('#login-btn').click(function() {
var email = $('#email').val();
var code = $('#code').val();
$.ajax({
url: '/response/',
method: 'POST',
data: {email: email, code: code},
beforeSend: function() {
$('#login-btn').prop('disabled', true);
$('#loading').show();
},
success: function(data) {
if (data.status == 'success') {
// 验证码校验成功,跳转到目标页面
window.location.href = 'http://spacexs.cn';
} else {
alert('验证码错误,请重新输入!');
}
},
error: function() {
alert('验证码错误,请重试!');
},
complete: function() {
$('#loading').hide();
$('#login-btn').prop('disabled', false);
}
});
return false;
});
});
</script>
</body>
</html>
```
帮我改进一下这段代码<!DOCTYPE html> <html> <head> <title>计时器和计数器联动</title> <style> body { background-image: url("https://photo.tuchong.com/16490599/f/1198392745.jpg"); background-size: cover; background-repeat: no-repeat; font-family: Arial, sans-serif; } .timer-container { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 400px; } .timer { font-size: 100px; color: black; margin-bottom: 50px; } .counter { font-size: 120px; color: red; } </style> </head> <body> <div class="timer-container"> <div class="timer">00:00:00</div> <div class="counter">0.00000</div> </div> <script> var timer = document.querySelector('.timer'); var counter = document.querySelector('.counter'); var startTime = Date.now(); var lastTime = startTime; var count = 0; function updateTime() { var currentTime = Date.now(); var timeDiff = currentTime - startTime; var hours = Math.floor(timeDiff / (1000 * 60 * 60)); var minutes = Math.floor((timeDiff % (1000 * 60 * 60)) / (1000 * 60)); var seconds = Math.floor((timeDiff % (1000 * 60)) / 1000); var milliseconds = Math.floor((timeDiff % 1000) / 10); var timeString = hours.toString().padStart(2, '0') + ':' + minutes.toString().padStart(2, '0') + ':' + seconds.toString().padStart(2, '0'); timer.innerHTML = timeString; count += 0.00182; counter.innerHTML = count.toFixed(5); lastTime = currentTime; } setInterval(updateTime, 1); </script> </body> </html>
这段代码已经很不错了,但是可以稍微改进一下:
1. 在样式部分,可以为元素添加 box-sizing:border-box;,以确保 padding 和 border 不会影响元素的实际宽度和高度。
2. 在 JavaScript 部分,可以将计时器和计数器的更新分别放入不同的函数中,以提高代码的可读性和可维护性。
下面是改进后的代码:
<!DOCTYPE html>
<html>
<head>
<title>计时器和计数器联动</title>
<style>
body {
background-image: url("https://photo.tuchong.com/16490599/f/1198392745.jpg");
background-size: cover;
background-repeat: no-repeat;
font-family: Arial, sans-serif;
box-sizing: border-box; /* 添加这一行 */
}
.timer-container {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 400px;
}
.timer {
font-size: 100px;
color: black;
margin-bottom: 50px;
}
.counter {
font-size: 120px;
color: red;
}
</style>
</head>
<body>
<div class="timer-container">
<div class="timer">00:00:00</div>
<div class="counter">0.00000</div>
</div>
<script>
var timer = document.querySelector('.timer');
var counter = document.querySelector('.counter');
var startTime = Date.now();
var lastTime = startTime;
var count = 0;
function updateTime() {
var currentTime = Date.now();
var timeDiff = currentTime - startTime;
var hours = Math.floor(timeDiff / (1000 * 60 * 60));
var minutes = Math.floor((timeDiff % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((timeDiff % (1000 * 60)) / 1000);
var milliseconds = Math.floor((timeDiff % 1000) / 10);
var timeString = hours.toString().padStart(2, '0') + ':' + minutes.toString().padStart(2, '0') + ':' + seconds.toString().padStart(2, '0');
timer.innerHTML = timeString;
lastTime = currentTime;
}
function updateCount() {
count += 0.00182;
counter.innerHTML = count.toFixed(5);
}
setInterval(updateTime, 1);
setInterval(updateCount, 5); /* 每 5 毫秒更新一次计数器 */
</script>
</body>
</html>
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