javascript - Add drag and drop function to tree component

I'm currently working on a tree component that has click and double-click events. Now I want to add the drag and drop function. Does anyone have a better idea for implementing drag and drop? What should I do if events such as mousedown and mousemove conflict with the click event?

怪我咯 2017-05-19 10:19:48 0  1  433

Accessing drag-and-drop elements in HTML: a comprehensive guide

The 'dragenter' event is fired when a dragged element enters a drag-and-drop element. This event is attached to the drop element so I can access it. Where is the dragged element?

P粉316890884 2023-08-01 10:13:18 0  1  542

javascript - HTML5 drag and drop does not work on the pad, how to solve it

HTML5 drag and drop cannot be used on the pad and the dragStart event cannot be triggered.

滿天的星座 2017-06-29 10:10:07 0  1  935

Drag-and-drop method for adding text fields to user-uploaded PDFs

Please someone explain to me how to drag and drop a text field into an uploaded PDF like adobesign. I'm trying to make a React app using DocuSignAPI and I need to add fields to a PDF.

P粉232793765 2024-03-31 09:46:21 0  1  371

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  489

Select options in drop-down menu using CSS and Javascript

I have a CSS selector value: .ng-touched>div:nth-child(1)>div:nth-child(1)>div:nth-child(2)>input:nth-child(1 ) I'm trying to use document.querySelectorAll to find this CSS selector that has a dropdown menu and select the option with the text "APPLE". It is the ...

P粉739706089 2023-09-04 22:10:59 0  1  583

mysql - How to insert into the database after drag and drop reordering?

It is an article pagination, for example, ten pages, and the serial number is 1-10; one page stores a piece of data, but how do I sort it in the database after dragging it randomly?? The drag-and-drop modifications of each page are saved in the database in real time. I Now there are two ideas. One i...

某草草 2017-05-18 10:56:17 0  1  1119

After obtaining the database data in thinkPHP5, the value of the drop-down box is selected by default and is passed to the background and disappears. There are pictures and codes, I hope someone can help.

After getting the data from the database, it is selected by default. I write it in two formats: using the ajax method: If I write a judgment statement, when I change the option of the drop-down box and submit it, js can get the changed data, which is status and Value of role: The following picture i...

3维 2019-10-04 23:28:15 0  2  1163

I followed the steps, but when I zoom in and out, the drop-down doesn't appear when I click the button.

I followed the steps, but when I zoom in and out, the drop-down doesn’t appear when I click the button.

千里同**络科技**** 2020-08-02 17:50:48 0  0  2481

After constant replacement, the drop-down arrow on the left sidebar cannot appear. There is no problem in introducing JS and CSS.

After constant replacement, the drop-down arrow on the left sidebar cannot appear. There is no problem in introducing JS and CSS. Can anyone give me some guidance on what's going on?

浮尘 2017-12-26 17:00:53 0  3  1520

In the user registration section of the third section of Chapter 10 of the TP5.1 tutorial, the bootstrap menu drop-down cannot be displayed, and script verification cannot be performed.

The preliminary implementation of the user registration function in Section 3 of Chapter 10 of the Tianpeng teacher TP5.1 tutorial cannot display the bootstrap drop-down menu and cannot pop up the second question. The script verification cannot be implemented <script> $(function(){ $("#re...

走过沙漠的骆驼 2021-09-20 13:50:37 0  3  889

javascript - js drag and drop problem

Drag a div to different areas, how to determine which area it is dragged to? Please select different option areas when dragging as shown in the figure, how to determine which area it is dragged to?

巴扎黑 2017-06-28 09:26:59 0  5  726

javascript - if statement in change event in jquery fails

{Code...} Two drop-down boxes request different ajax addresses for the change event of the first drop-down box. Change the data of the second drop-down box. {Code...} Determine the value of the first drop-down box and request different backgrounds. The interface, but the console shows $(this).val(),...

巴扎黑 2017-05-19 10:10:24 0  2  646

javascript - How to implement the drag-and-drop function of jquery ui to stop drag-and-drop when certain conditions are met

As shown in the picture, I can drag the small dot in the lower right corner to zoom the image. Since the zoom function of jquery ui cannot be satisfied, I wrote this myself. Now I need to drag the small dot in the lower right corner to the position in Figure 2. , you can no longer continue dragging ...

某草草 2017-05-19 10:42:24 0  1  458

javascript - jquery uses the append() method to add, for example, easyui's combotree to make a tree-shaped drop-down box. Please help.

Hello everyone, I am new to jquery and easyui. At present, I want to implement a function. Click "Add Button" and a selectable tree drop-down box will pop up for selection and submission. The current implementation method is to declare an element and then append it to the form. But the pop...

为情所困 2017-05-19 10:47:20 0  3  580

javascript - swiper.js has nested swiper. The initial setting cannot slide to the next one. Re-initialize after the end.

{Code...} Drag and drop completed {Code...} How to re-initialize?

漂亮男人 2017-06-28 09:27:46 0  1  819