javascript - How to draw the map migration aircraft in echarts? ?

How is the palnepath shown in the picture above obtained? ? I don’t quite understand how the plane was drawn. . , can someone explain it in detail? Thank you.

某草草 2017-05-19 10:10:43 0  2  699

How can I make the link cover the entire image?

I want the link to cover all images, not just in the center but also when you hover over the image. .moduledata{position:relative;width:auto;margin:0px!important;max-width:380px;}.moduledata>h5{position:absolute;left:50%;top:50%;transform:translate(-50% ,-50%);}.m

P粉481815897 2024-04-02 20:45:43 0  1  501

javascript - Is the width of one pixel in ppi equal to 1px?

ppi: pixels per inch, the number of pixels that can be displayed per inch on the screen, that is, the screen pixel density. Is the width of one pixel equivalent to 1px in web design?

我想大声告诉你 2017-05-19 10:36:52 0  1  624

How to achieve overlapping and same size of sibling images/divs in parent element with padding

I want a div that covers the image. I can get the div to cover the image by using position:relative in the parent element, and position:absolute in the div, but the background-color fills the parent element's padding, causing them to not cover properly. Below is a snippet demonstrating the problem. ...

P粉554842091 2023-09-12 10:49:55 0  2  551

I don't know if my understanding of falling is correct or not.

The reason why the middle body is written at the back is that the previous left right has the float attribute set and is out of the document flow. At this time, the following body will automatically move up to the original document flow position of left. margin-left=left's width, margin- right=width...

枫叶 2018-03-26 12:15:22 0  0  1284

javascript - Can nodejs crop images?

It is a large picture cropped to a certain width and height in the middle. The processed picture is on the server, such as 'https://img.biaoqing.com/work...'

为情所困 2017-06-22 11:54:27 0  3  919

How to set a background image, make it full screen, and set it to the back of the page (HTML, CSS, JavaScript)

I want to set a background image for this simple game I'm creating but don't know how to get the image to be centered on the input screen and cover all page height and width. I also want the image to be the background so the game is on top of the image and the image should be the bottom layer. letch...

P粉384244473 2024-03-22 09:53:51 0  2  376

javascript - Problems with canvas processing images

I need to use canvas to process a picture uploaded by the user. The size uploaded by the user may be very large, for example, it will exceed the width and height of the current browser window, so I scale it proportionally to the visible area of ​​the browser, and then Draw it onto the canvas, but th...

扔个三星炸死你 2017-06-10 09:49:16 0  3  978

In Vue.js, click a button to randomly generate animations

I have three lottie player json animation files - congratulations1.json, congratulations2.json and congratulations3.json animations are as follows: Congratulations 1: <lottie-playerv-if="showPlayer1" class="justify-content-center" src=". ./../../

P粉722521204 2024-03-27 23:57:52 0  1  366

How to implement the Android photo preview interface to display a rectangular frame?

I want to implement a custom camera. There is a rectangular frame in the middle of the camera preview interface, and the other parts are translucent. Then I want to get the picture in the rectangular frame. Can anyone give me some advice? Similar to the effect below.

高洛峰 2017-05-16 13:27:07 0  1  526

How to vertically center text next to a switch?

I want to make a text in the center of "toggle-label" class vertically with "switch" but I failed this is the code I used.toggle-label{font-weight:bold;font-size:20px;}.switch{ position:relative;display:inline-block;width:54px;height:28px;}.switchinput{opacity:0;width:0;

P粉354948724 2023-09-15 11:58:54 0  1  528

objective-c - How to control the size of photos saved to the album after taking pictures with a custom camera?

Now the width and height of my customized camera are both 200. When the photo is taken and saved to the album, the size of the image should be the image size previewed in the customized camera. However, when viewing the album, it is found that the full-screen photo is saved. Later, I tried cropping ...

女神的闺蜜爱上我 2017-06-15 09:23:54 0  1  1000

Change image opacity when selecting option from form

How can I change the opacity of idMaster's image to 1 when I select the option with value 1 (MasterCard)? and put it into a function that works on these 4 values, each with its own id? I want the default image to be 0.3 and when one of the options is selected the image has an opacity of 1. .itemForm...

P粉244155277 2024-04-03 23:00:48 0  2  405

Hide and show animated content: Create HTML pages with transition effects

I'm trying to make a website that displays content in book form, with page-turning animations. There are different svg images to animate for the content of each "page"; I'm not sure how to do this. Basically, is there a way to show and hide content the way I want without having to create a...

P粉674757114 2023-09-10 17:41:45 0  1  659

Buttons on mobile remain focused or active, causing issues with CSS animations

I'm trying to achieve an animation every time I click a button, it works fine on desktop but I can't achieve the same effect on mobile. I have to click the button first, then click somewhere else to de-focus the CSS, then click the button again to get the animation effect. Below is the code snippet....

P粉043295337 2023-08-28 15:14:37 0  1  503

Why does my Lottie animation load correctly on the localhost server but not on the deployment server?

So the problem is that all Lottie animations load on my localhost server, but once the web app is deployed, the animations don't load and I get some errors in the console. Animation files are .json files. My project is the next jsReact project. Link to lottie: https://lottiefiles.com/ But when I ope...

P粉662614213 2024-03-29 12:05:35 0  2  433

html5 - z-index is valid in browser debugging but invalid in mobile phone testing

When debugging the browser, the arrow is hidden after a drag event occurs, but it is not easy to use on mobile WeChat. This element has animation animation. If you delete the animation, it will be effective. If you add it, it will be invalid. There is no floating in the current style file. The reaso...

高洛峰 2017-07-04 13:45:06 0  2  1815

javascript - Signal mechanism and event mechanism in Node.js ◔ ‸◔?

I found that the signal mechanism used for inter-process communication in Node.js is very similar to the event mechanism (see code example below). Is there any reason behind this? Or a design pattern? signal {code...} event {code...}

怪我咯 2017-05-16 13:43:18 0  1  579

Phaser failed to load the tile map, and the screen only displayed a black screen

I'm trying to load a tile map created in the Tiled map editor. I have exported it as a json file and placed it in the assets folder in the public folder along with my tile set. All that appears on the canvas is black. I tried changing the camera's position to see if that made a difference, but to no...

P粉832490510 2024-03-30 20:38:02 0  1  660

Why can't I reset the array using setState?

In my camera component I want to upload photos to a bucket every 3 photos. I'm using state in React to save image blobs into an array. Everything works fine for the first 3 photos, but after that, I can't reset the array to empty and a seemingly random number of photos get uploaded to my bucket. let...

P粉714890053 2023-09-02 23:44:06 0  2  579