javascript - When using H5 drag and drop, why is the dragged element removed?

1. Please see the phenomenon: https://codepen.io/xuyu/proje... 2. The effect I want to achieve is to copy the dragged element to the specified area and do not want to delete the dragged element.

ringa_lee 2017-06-22 11:53:56 0  1  972

javascript - ios webview How to prevent the scroll bar from being dragged when it reaches the top?

The webview has set webView.scrollView.bounces = NO; the outermost layer of the webview will no longer be dragged, but the overscroll elements inside the webview will still have a drop-down dragging effect. How to prohibit it? There is no such problem on Android.

曾经蜡笔没有小新 2017-06-24 09:44:25 0  1  1286

javascript - Issues about coordinate calculation after trasform

After I made a function of dragging pictures in the parent container, I used transform to change the parent container, rotate it, stretch it, etc. After that, the calculation of coordinates started to get messy. I would like to ask if I want it to be What should I do if it works normally? The draggi...

巴扎黑 2017-07-01 09:12:23 0  1  1494

JavaScript implements the drag-and-drop function of multiple elements

I found this code which allows you to drag and drop an item within a specific area, but I can't rewrite it to allow multiple elements to be dragged and dropped because I don't know how to get the id of the dragged object from the drop_handler function . letoffsetX;letoffsetY;onDragStart=function(ev)...

P粉276064178 2024-01-10 16:54:21 0  1  512

angular.js - Angular is used throughout the site, but what ideas should be used to implement highly interactive functions like the ones described below using Angular?

This application is described as follows: 1. Area C is divided into multiple pages, and you can switch up and down between pages. 2. Ax is a control that can be dragged to area C to generate corresponding elements, such as pictures, buttons, and text. 3. Generated pictures, buttons , the text can be...

習慣沉默 2017-05-15 16:53:09 0  4  638

angular.js - Is it possible to two-way data bind iframe elements through vue or angular?

I would like to ask you about developing a management system for H5 games. I want to synchronize the content of the page elements in the iframe in real time when inputting content in the background. What technology can be used to achieve this? Can vue and angular achieve this? The effect is as follo...

黄舟 2017-05-15 17:14:12 0  3  1027

How to make diff in Git without cloning

The demand is quite special. There are a batch of remote warehouses that need to be scanned, and the diffs within a period of time are needed. It would be troublesome to clone them all and then check the diffs separately. Is there any way to directly svn diff -r 3000:3500 like svn? http:// svn.xxxx....

迷茫 2017-05-02 09:38:27 0  1  707

How does reducing font size cause height to increase?

I have a block with a specific line height where I insert content with a ::before pseudo-element. .block::before{content:'texthere';} This works well. However, if I also give the content a smaller font size .block::before{font-size:.6em;content:'texthere';} the block actually becomes taller. why is ...

P粉947296325 2023-11-23 12:42:17 0  2  1051

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  1833

How to make an element fill its container using CSS?

How can we make the margin element fill a Flexbox item that is not itself a Flexbox? An element (even a nested element with margins) can easily fill its container using position:absolute - if it's not inside a Flexbox item. Why doesn't this work for elements inside a Flexbox project? <main><...

P粉514458863 2024-02-21 16:48:39 0  2  421

React + d3 - Why is my <g> element unresponsive to onClick listener

I'm fairly new to d3 and I know there may be some conflicts between React and d3. This may be one of them. I have an svg that implements d3's scalable behavior. I want the elements inside the svg to be draggable. My first attempt was to put an onClick listener to log something in the console, but it...

P粉504080992 2024-01-29 13:48:01 0  1  525

javascript - Why can't jqeury's ID selector with string concatenation be used?

{Code...} In this code, checkeds is an array of ids. The third line is to find elements with the .text-status style in the sibling elements of the parent of the id element and remove the text-green style. But it cannot take effect. The following is the content of the searched parent element td repor...

phpcn_u1582 2017-06-30 09:59:52 0  6  957

Does HTML5 allow non-empty self-closing tags?

The W3C validator (Wikipedia) does not like the use of self-closing tags (tags ending in "/&gt;") on non-empty elements. (Empty elements are those that never contain any content.) Are they still valid in HTML5? Some examples of accepted empty elements:&lt;br/&gt;&lt;imgsrc=...

P粉680487967 2023-08-21 18:20:11 0  2  623

python matching data output data

I now have a list with the content re=['test1','test2','test3'], and a csv or xlsx or txt with two columns of data. The effect I want to achieve is if the element of re It is equal to column A in the file. This outputs the row of data in column AB of the file. How should this be done specifically...

扔个三星炸死你 2017-06-12 09:24:22 0  2  810

Do custom elements require closing tags?

The elements I've defined (which don't require content) seem to work just fine without the closing tag. I'm wondering if this is just a quirk of the browser. What was the verdict? Is it theoretically possible? What if the parser sees the element before it is defined?

P粉717595985 2023-10-29 22:40:33 0  1  808

Why does grayscale SVG become less bright when converted to alpha?

I'm trying to create a transparent "starry night" effect using SVG. I have the SVG inline inside a black background element on the web page. I started with a turbulence filter and then applied a color matrix to get the desired effect: <svgxmlns="http://www.w3.org/2000/svg">...

P粉986937457 2024-02-26 18:01:19 0  1  326

Show no and: yes

Whether to: React positively or negatively to the display: None. This means if you have an element and nothing is displayed on it, will :has still see that there is an element? I think it will, because there's an element there. But I might need to combine it with ::not([style*="display:none&quo...

P粉396248578 2024-04-02 19:02:04 0  2  394

React Native: Is it possible to have custom subviews in TextInput component?

I'm trying to create a TextInput component that has a custom view when typing someone's name. For example, if the name is John, it will search for that string and add a view that contains John's profile image and his name inline with the text. Currently, when I make the view a child component of the...

P粉553428780 2023-09-11 15:07:01 0  1  602