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Deep copy duplicates both values and memory addresses, creating a new independent object. Shallow copy only copies the reference address, sharing memory with the original object, so changes to the original affect the copy. For shallow copies: Direct assignment (=) Spread operator (...) Object.assign() For deep copies: JSON.stringify() follow ...

Define a custom interceptor in bean configuration file <mvc:interceptors> <!-- Custom interceptor declaration --> <bean class="com.example.interceptors.CustomInterceptor"/> </mvc:interceptors> Implementation of the interceptor class package com.example.interceptors; import javax.servlet.http.HttpServl ...

Retireving the Current URL The current page URL can be accessed directly through the native window object: window.location.href; This requires no external libraries—standard JavaScript suffices. Extracting URL Query Parameters Retrieving specific parameters from the URL query string involves parsing the search portion. The following approach u ...

Web Concepts HTML stands for Hyper Text Markup Language, which is used to describe web pages. HTML is not a programming language but a markup language. HyperText refers to: Beyond text limits: it can include images, sounds, animations, and multimedia content. Hyperlink text: it allows jumping from one file to another and connecting with files ...

SSH Framework Implementation Guide Project Framework Setup: Create Control Project Required JAR Packages: db: Database connection driver hibernate: Hibernate framework libraries jstl: Java Standard Tag Library junit: Testing framework spring: Spring framework libraries struts2: Struts2 framework libraries Project Layer Structure: com.tech. ...

Visual Formatting Model and Box SizingThe CSS box model dictates how elements are rendered as rectangular containers on the page. It consists of four distinct areas: content, padding, border, and margin.Content-Box (Standard Model): The defined width and height apply exclusively to the content area. Padding and borders increase the total render ...

Custom redprints extend Flask's blueprint functionality by adding URL prefix capabilities. While blueprints provide a foundation, redprints introduce an additional url_prefix layer. For instance, if a blueprint has url_prefix='v1' and a redprint has url_prefix='book', the resulting URL becomes: 127.0.0.1:5000/v1/book The project structure is ...

Function FundamentalsJavaScript functions operate similarly to methods in languages like Java, serving as reusable blocks of code designed to perform specific tasks. However, the syntax is more concise. Unlike Java, JavaScript function definitions do not require access modifiers, explicit return type declarations, or exception lists. The core d ...

Locating Substrings To find the position of a specific character or sequence within a string, use indexOf(). This method returns the index of the first occurrence or -1 if the value is not found. const message = "Learn, build, and share"; // Finding the first occurrence of 'b' const firstB = message.indexOf("b"); // returns ...

HTML Syntax Fundamentals Core Syntax Rules HTML elements are enclosed in angle brackets, such as <div> Most elements come in pairs with opening (<tag>) and closing (</tag>) tags Void elements like <br> are self-closing and don't require end tags Element Relationships Elements can be nested (containing) or sibling (para ...