TCP/IP Five-Layer Model Physical layer, Data link layer, Network layer, Transport layer, Application layer Application Layer Protocols: TCP vs UDP TCP-based Protocols: File Trnasfer Protocol (FTP): Port 21 Telnet: Port 23 Simple Mail Transfer Protocol (SMTP): Port 25 Post Office Protocol 3 (POP3): P...
Overview This article introduces StreamSaver.js, a library that enables efficient and seamless large file downloads directly from web browsers. Traditional methods of downloading files using <a> tags can cause issues with large files, such as high memory consumption or browser rendering instea...
Frontend file downloads often require displaying custom filenames, which differs from standard file uploads or Excel operations. This guide covers two practical approaches using JavaScript and Vue.js. Custom Filename Downloasd To download files with specific names, use the Blob API and temporary lin...
In resource scheduling interfaces, the all-day events section often consumes unnecessary vertical space when building shift management or room booking systems. This header region, designed for displaying events without specific timestamps, appears by default at the top of weekly and daily veiws. Dis...
Introduction to Frontend Technologies The three foundational pillars of frontend web development are HTML, CSS, and JavaScript. 1. HTML: The Webpage Foundation 1.1 Overview HyperText Markup Language (HTML) is the standard markup language for creating web pages. Currently in its fifth iteration, comm...
Constructing a 3D Sphere with CSS By rotating flat circular elements around the Y-axis at regular intervals, a spherical illusion is created. The transform-style: preserve-3d property is essential to maintain the 3D positioning of the child elements. <!DOCTYPE html> <html lang="en"...
Type Checking and Identification JavaScript categorizes data into primitives and reference types. The typeof operator distinguishes most primitives (returning number, boolean, string, undefined, and function), but it falls short for objects, arrays, and null, all of which evaluate to "object&qu...
Variable Declaration: var, let, and const // var has function scope and hoisting behavior // let and const have block scope // var example function exampleVar() { console.log(hoisted); // undefined due to hoisting if (true) { var hoisted = "I am hoisted"; } console.log(hoisted); // accessi...
Issue 1: Unexpected Page Refresh with Single Input Form Pressing Enter in a form containing only one input triggers page reload due to native form submission. Prevent this behavior: <el-form @submit.native.prevent> <el-form-item label="Search ID"> <el-input v-model="sea...
Syntax and Core Concepts Variable Declarations and Types JavaScript is a dynamically typed language. Variables can be declared using var, let, or const. var: Function-scoped, hoisted. let: Block-scoped, not hoisted. const: Block-scoped, must be initialized, cannot be reassigned. let userAge = 28; co...