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Article Introduction：This article explores the limitations and alternatives for removing files from FileList in drag-and-drop upload applications using HTML5. It explains that while the FileList is readonly, the entire FileList can be erased by setting the value property

2024-10-23 comment 0  889

Article Introduction：Uploading Multiple Files with HTML and PHP via HTTP POSTProblem:Users want to select and upload multiple files at once using a single input...

2024-12-05 comment 0  1103

Article Introduction：This article presents a modified code snippet for uploading multiple files using the FormData interface and XMLHttpRequest. The original code allowed for uploading a single file, but this modification enables users to select and upload multiple files

2024-10-22 comment 0  888

Article Introduction：This abstract demonstrates a code modification to enable the upload of multiple files using the formData() method. The solution requires iterating over the chosen files, appending them to the formData object, and handling them on the server-side scri

2024-10-22 comment 0  506

Article Introduction：Detailed explanation of HTML5 drag and drop file upload: client file processing and asynchronous server upload Core points HTML5 supports dragging and dropping files on web page elements, and analyzing drag-and-drop files in JavaScript, loading and parsing files on the client, uploading files asynchronously to the server using XMLHttpRequest2, and displaying a graphical progress bar during uploading. Browser support may be uneven due to the use of the latest HTML5 technology. Current versions of Firefox and Chrome support all features, while Opera, IE and Safari support is limited or not supported at all. To enable file drag and drop, JavaScript events must be attached to the file input element

2025-02-25 comment 0  868

Article Introduction：Retrieving Files or Blobs from Object URLsWhen allowing users to upload images through drag-and-drop or other methods, the use of...

2024-10-29 comment 0  689

Article Introduction：Retrieving Files from Object URLs for Form SubmissionWhen integrating drag-and-drop functionality for image upload, you may encounter a scenario...

2024-10-28 comment 0  603

Article Introduction：This article discusses the issue of removing unwanted files from the FileList in a HTML5 drag-and-drop file upload application. The FileList attribute is defined as readonly, making it impossible to delete individual files directly from the list. To

2024-10-23 comment 0  614

Article Introduction：Six Excellent jQuery File Upload Plugins for Easy Integration This article showcases six user-friendly jQuery file upload plugins, many offering drag-and-drop and multiple file selection capabilities. Let's dive in! jQuery uploadprogress: This plu

2025-02-26 comment 0  911

Article Introduction：Multiple File Upload with PHP and jQueryIn this scenario, you're attempting to upload multiple files using PHP and jQuery. To accomplish this,...

2024-11-01 comment 0  1072

Article Introduction：This article demonstrates enhancing HTML5 drag-and-drop functionality for multiple element handling and keyboard accessibility, benefiting both sighted and screen reader users. Assuming basic familiarity with the drag-and-drop API (refer to introduc

2025-02-20 comment 0  997

Article Introduction：The key steps to implement the draggable function include: 1. Use the draggable attribute of HTML5 to make the elements draggable; 2. Set drag data through the dragstart event; 3. Listen to the dragover and drop event processing placement logic in the target area; 4. Use the FileList object to implement drag and drop upload. The HTML5 native drag and drop API uses a series of event control processes, such as dragstart, dragover, drop, etc., where draggable custom elements need to be set to set draggable="true" and bind dragstart event, and call setData() to save data. The dr must be blocked when handling drag and drop

2025-07-10 comment 0  400

Article Introduction：HTML5 natively supports drag and drop function, and interacts by setting draggable attributes and listening to dragstart, dragover, and drop events. 1. Set the element draggable="true" to enable drag; 2. Use dataTransfer.setData() to pass data in dragstart; 3. The target area listens to the dragover and blocks the default behavior to allow placement; 4. Get data and process content in the drop event; precautions include cross-domain restrictions, visual feedback, mobile compatibility and file upload support. Mastering these key points can achieve basic drag-and-drop interaction.

2025-07-15 comment 0  133

Article Introduction：Retrieving Files from Object URLsWhen working with drag-and-drop image uploads, you may need to convert files to object URLs for display. However,...

2024-10-29 comment 0  578

Article Introduction：Using FormData for AJAX File UploadIn this scenario, you're attempting to implement AJAX file upload using a drag-and-drop generated HTML form....

2024-12-15 comment 0  803

Article Introduction：In my last post, How to Use HTML5 File Drag & Drop , we discovered how to use the HTML5 File API, implement drag and drop events, and retrieve file information. Today, we’ll attempt to load files on the client using JavaScript. Why Open Local F

2025-03-02 comment 0  838

Article Introduction：HTML5DragandDrop API is a browser natively supported drag and drop function interface. 1. It controls the drag-and-drop process through events such as dragstart, drag, dragend, dragter, dragover, drop, dragleave, etc.; 2. When implementing, you need to set draggable="true" and bind event processing functions, such as setting data in dragstart and getting data in drop; 3. Notes include: e.preventDefault() must be called in dragover to trigger drop, dataTransfer is used to pass data, and when dragging files, it is

2025-07-09 comment 0  314

Article Introduction：TheDragandDrop API is a browser built-in feature for drag-and-drop interaction. It supports multiple use cases: 1. Reorder to-do lists; 2. Build UI components that can place elements; 3. Implement drag-and-drop file uploads. When using it, you need to set draggable="true" and listen for dragstart event to enable drag, and set dropzone and handle dragover and drop events to receive drag and drop content. Note: Not all elements can be dragged by default, the data types need to be unified, and there may be restrictions on cross-domain and mobile terminals.

2025-06-25 comment 0  616

Article Introduction：HTML5 drag and drop function is implemented through dragstart, dragover, drop and other events, and is often used for file upload and element interaction. ① When implementing, you need to set the element draggable="true" and prevent the default behavior of the dragover; ② File upload depends on the DataTransfer object to obtain the file list; ③ Element interaction requires storage of data in dragstart and reading in drop; ④ Pay attention to browser compatibility and mobile adaptation; ⑤ Add visual feedback to improve user experience.

2025-07-07 comment 0  163

Article Introduction：The article explains how to move columns in Excel using drag-and-drop and keyboard shortcuts, detailing steps for single and multiple column rearrangements.Character count: 159

2025-03-21 comment 0  1059