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Course Introduction：Here are some powerful jQuery code snippets for manipulating the mouse cursor! They can be used to set and get text cursor position and selection range in the input and text area fields. Enjoy it! // jQuery get cursor position function call example $("input[name='username']").getCursorPosition(); jQuery.fn.getCursorPosition = function(){ if(this.length == 0) return -1; return $(this).g

2025-03-10 comment 0  844

Course Introduction：By using the scan command, we can iterate over all keys in Redis by following the steps: The initial cursor is set to 0. Loops the SCAN 0 command to get the result set and a new cursor. The number of keys contained in each result set can be specified by the COUNT option. Use the new cursor as the first parameter of the SCAN command to get the next result set. Continue looping until the returned cursor is 0, indicating that there are no more results.

2025-04-10 comment 0  974

Course Introduction：In AutoCAD, you can adjust the cursor size by the following methods: 1. Enter the command CURSORSIZE and set the percentage value from 5 to 20 to adjust the cross cursor size; 2. Open the "Sketch Settings" dialog box, drag the "Tag Size" slider in the "Object Snap" tab to adjust the visual effect of the capture mark; 3. Modify the "Pickup Box Size" in the "Select Set" tab of the "Options" dialog box. It is recommended to set the appropriate value between 1 and 50 according to the mouse accuracy and screen resolution to improve selection efficiency.

2025-07-08 comment 0  738

Course Introduction：Get the position and size of an element in JavaScript can be obtained by the following methods: 1. Use getBoundingClientRect() to get the position and size relative to the viewport. 2. Combining the scroll offset, get the position relative to the document. 3. Use offsetTop and offsetLeft to get the position relative to the most recent positioned ancestor, and obtain the position relative to the document by cumulatively. 4. Use clientWidth and clientHeight to get the dimensions that do not include borders and scrollbars. 5. Use getComputedStyle to get the content-box size that does not include padding.

2025-05-23 comment 0  562

Course Introduction：Get the relative position of the mouse relative to the element in jQuery The following jQuery code snippet is used to get the relative position of the mouse pointer. This function takes the element ID and the current x and y coordinates of the mouse pointer as parameters. It then returns the relative distance between the current position of the mouse cursor and the specified element. function rPosition(elementID, mouseX, mouseY) { var offset = $('#' elementID).offset(); var x = mouseX - offset.left; var y = mouseY - offs

2025-03-05 comment 0  524

Course Elementary  13779

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82293

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13148

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24595

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27455

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.