这是我针对不同情况的代码。Demo1:为什么红框和蓝框不在同一水平面上?

<head>
<meta charset="utf-8" />
<title></title>
<style type="text/css">
body {
margin: 0;
}
#div1 {
display: inline-block;
background-color: red;
width: 50px;
height: 50px;
}
#div2 {
display: inline-block;
background-color: blue;
width: 50px;
height: 50px;
}
#div2-child {
width: 20px;
height: 20px;
background-color: yellow;
display: inline-block;
}
</style>
</head>
<body>
<div id="div1">x</div>
<div id="div2">
<div id="div2-child"></div>
</div>
</body>
Run Code Online (Sandbox Code Playgroud)
Demo2:在Demo1的基础上,我把x去掉了,为什么底部是蓝色的框。

<head>
<meta charset="utf-8" />
<title></title>
<style type="text/css">
body {
margin: 0;
}
#div1 {
display: inline-block;
background-color: red;
width: 50px;
height: 50px; …Run Code Online (Sandbox Code Playgroud) 我目前正在处理包含大量数据(5000)的数据表。为了能够按进度加载数据,我添加了一个进度条,用于说明每个时间单位已加载的数据量。但下面的代码不再起作用。
let handleProgressBar = (id, value, total) => {
let percent = Math.round((value / total) * 10000) / 100;
$(id + " > div").html(percent + "%");
$(id + " > div").css('width', percent + "%");
}
let table = $('#data').DataTable();
fetch('https://jsonplaceholder.typicode.com/photos')
.then((res) => res.json())
.then((res) => {
res.forEach(async(data, index)=>{
table.row.add([
data.id,
data.albumId,
data.title,
data.url
]);
handleProgressBar('#progress-bar', index+1, res.length);
await new Promise(r => setTimeout(r, 1)); // sleep 1 ms
});
table.draw();
});Run Code Online (Sandbox Code Playgroud)
.progress-bar-striped {
overflow: hidden;
height: 20px;
margin-bottom: 20px;
background-color: #f5f5f5; …Run Code Online (Sandbox Code Playgroud)我的图像资源中有一些徽标。这些标志将被导入到本网站中。每个标志都有随机颜色(可以是白色、黑色、灰色、红色、蓝色、绿色等)并具有透明背景。例如:
以下代码将用于在网站页面上显示徽标:
.magic-box {
width: 200px;
height: 100px;
border: 1px solid black;
position: relative;
border-radius: 20px;
background-color: white; /* can be changed */
}
.magic-image {
max-height: 100%;
max-width: 100%;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
margin: auto;
}
.images {
display: flex;
}Run Code Online (Sandbox Code Playgroud)
<div class="images">
<div class="magic-box">
<img src="https://i.stack.imgur.com/b7yHv.png" class="magic-image" />
</div>
<div class="magic-box">
<img src="https://i.stack.imgur.com/IhCH1.png" class="magic-image" />
</div>
<div class="magic-box">
<img src="https://i.stack.imgur.com/tYjdM.png" class="magic-image" />
</div>
</div>Run Code Online (Sandbox Code Playgroud)
问题是当我将背景颜色设置为.magic-box白色时,白色徽标不会显示。当背景颜色设置为黑色时,黑色标志不可见,等等。
.magic-box {
width: …Run Code Online (Sandbox Code Playgroud)I am using node.js and implementing an API that returns a response as Content-Type: application/json like this:
module.exports={
api: (req, res) => {
let data = {"data": [1, 2, 3]};
res.status(200).json(data);
}
}
Run Code Online (Sandbox Code Playgroud)
But, there is no favicon that can be viewed when trying that API on the browser. I see another website that can get this done.
How can add a favicon on the Node.js API with Content-Type: application/json?
我有一个像这样的二维数组:
[[0,23],[19,30],[6,47],[5,59],[1,56],[1,20],[19,10]]
Run Code Online (Sandbox Code Playgroud)
我如何根据对的值进行排序,如下所示:
[[0,23],[1,20],[1,56],[5,59],[6,47],[19,10],[19,30]]
Run Code Online (Sandbox Code Playgroud)
这是我的尝试:
[[0,23],[19,30],[6,47],[5,59],[1,56],[1,20],[19,10]]
Run Code Online (Sandbox Code Playgroud)
[[0,23],[1,20],[1,56],[5,59],[6,47],[19,10],[19,30]]
Run Code Online (Sandbox Code Playgroud)
下面的代码仍然给出错误的结果。对于简单的解决方案有什么建议吗?
javascript ×4
css ×3
html ×2
arrays ×1
colors ×1
content-type ×1
datatables ×1
express ×1
favicon ×1
image ×1
jquery ×1
node.js ×1
progress-bar ×1
sorting ×1