loops in JS

Duration: 3 min

This video lesson is available to enrolled students.

Return to /learn/RSSB-INFORMATICS-ASSISTANT/internet-web-technology/server-side-security/server-side-scripting/asset-loops-in-js after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. Numerical Ability & Problem Solving: Speed Mathematics and Basic Mathematics, Arithmetic, Number System, HCF LCM, Divisibility Rules, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Mixture and Alligation, Time and Work, Pipe and Cistern, Speed Time and Distance, Age Problems, Partnership, Data Interpretation, Mental Ability, Sequence and Series (Series), Powers and Exponents (Surds and Indices), Algebra, Statistics, Logarithm, Mensuration and Geometry, Permutation and Combination, Probability, Sequences and Series, Powers, Surds and Logarithms, Subject-Verb Agreement, Sentence Completion, Geometry, Sentence Structure and Correction, Data Sufficiency, Trigonometry, Measurement and Quantity Take-Off, Signal Space and Optimum Detection, Probability, Statistics, Algebra, Time and Work, Speed, Time and Distance, Data Interpretation, Combinatorics
  2. Logical Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Logical Sequence Of Words, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence, Selection Decision Table (Decision Making), Alphabet and Word Tests, Numerical Reasoning, Number System, Averages, Mixtures and Alligation, Percentages, Series Completion, Analogy and Classification, Patterns in Two-Dimensional Figures, Coding and Decoding, Mathematical Operations, Direction Sense, Logical Deduction and Induction, Syllogisms and Venn Diagrams, Critical Reasoning, Order, Ranking and Sequence, Reading Comprehension, Profit, Loss and Discount, Constraint Puzzles, Traverse Surveying, Ratio and Proportion, Mensuration, Permutations and Combinations, Clocks and Calendars, Assembling and Grouping of Shapes, Transformation of Shapes, Three-Dimensional Patterns and Visualization, Cubes and Dice, Vocabulary, Blood Relations
  3. General Knowledge & Current Affairs (India + Rajasthan): History, Geography, Polity, Indian Economy, Static General Knowledge, State Wise GK, GK- Current Affairs, Environment, Physics
  4. Computer Fundamentals & Operating Systems: Basics of COA, Floating Point Rep, Digital Systems & Boolean Basics, Number Representation, Number System, Introduction to OS, File Management, Windows OS, Unix OS, Linux OS, Register Transfer and Microoperations, Virtual Memory
  5. Computer Networks: Introduction to CN, Data Communication, DLL: Error Control, DLL: Access Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Application Layer, Hardware Basics, Network Security
  6. Cyber Security: Cyber Threats and Malware Attacks, Role of Internet and Web Services, Security in Mobile and Wireless Computing, Electronic Data Interchange and E-Commerce, Physical Security and Cryptography Basics, Intrusion Detection Systems (IDS), Cyber Safety and Security, Ethical Hacking
  7. Programming (C & OOP): C Fundamentals, Control Flow, Arrays & Pointers, Functions, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, OOPS with C++, Operators & Expressions, Sorting Algorithms, Java Fundamentals, Java
  8. MS Office & Data Processing: MS Office Applications, Basics of DBMS
  9. Internet & Web Technology: Society, Law & Ethics, Terms & Abbreviations, Keyboard Shortcuts, Emerging Tech Trends, Artificial Intelligence, Emerging Technologies, Internet Fundamentals, Website, Browser & Services, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video segment focuses on fundamental JavaScript concepts, specifically control flow structures and number system representations. The instructor begins by explaining the utility of loops for executing code blocks repeatedly with varying values. She details the syntax for for, do...while, and while loops, providing a visual example of a for loop. The session concludes with a specific exam question regarding number system prefixes, where the instructor identifies that a leading zero in JavaScript denotes an octal number system.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor introduces the topic JavaScript Loops using a PDF slide. She explains that loops are handy for running the same code over and over again. The slide lists three specific statements provided in JavaScript: for statement, do...while statement, and while statement. She elaborates on the for statement, noting it repeats until a specified condition evaluates to false. She writes the general syntax on the screen: for ([initialExpression]; [conditionExpression]; [incrementExpression]) statement. To illustrate, she handwrites a specific example: for (i = 0; i < 10; i++). The slide also briefly introduces the Document Object Model, stating that every web page resides inside a browser window which can be considered as an object.

  2. 2:00 – 3:03 02:00-03:03

    The video shifts to a multiple-choice question from the RPSC VPITI 2018 (IT) exam. The question asks: In Java Script, if you add a leading zero like 0127 the number system followed is. The options provided are (a) Decimal, (b) Hexadecimal, (c) Binary, and (d) Octal. The instructor writes 0x on the board to represent Hexadecimal and discusses binary prefixes like 0b or 02. She explains that while 0x is for hex, a leading zero like 0127 specifically indicates the Octal system in JavaScript. She marks the answer as (d) Octal and writes 0x127 -> Hexade to contrast the syntax for hexadecimal numbers.

The lecture effectively bridges theoretical programming concepts with practical syntax rules. It starts with the mechanics of iteration using loops, showing how to structure a for loop with initialization, condition, and increment expressions. It then transitions to data representation, clarifying a common point of confusion regarding number literals. By analyzing a specific exam question, the instructor reinforces that a leading zero signifies an octal value, distinguishing it clearly from hexadecimal (0x) and binary (0b) prefixes.

Loading lesson…