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Sai Aviotechnics Interview Questions and Answers

Updated 5 Feb 2024

Q1. What is html and diffrence between html and HTML5?

Ans.

HTML is a markup language used to create the structure of web pages. HTML5 is the latest version with new features and improvements.

  • HTML stands for HyperText Markup Language and is used to create the structure of web pages.

  • HTML5 is the latest version of HTML with new features like <video>, <audio>, <canvas>, and more.

  • HTML5 introduced new semantic elements like <header>, <footer>, <nav>, <article>, <section>, <aside>, and <main>.

  • HTML5 supports multimedia elements, form validat...read more

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Q2. Difference between visibility hidden and display none

Ans.

visibility:hidden hides the element but still takes up space, display:none hides the element and does not take up space.

  • visibility:hidden keeps the element in the document flow and preserves its dimensions

  • display:none removes the element from the document flow and does not preserve its dimensions

  • visibility:hidden still allows the element to be interacted with, display:none does not

  • visibility:hidden can still affect the layout and positioning of other elements, display:none do...read more

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Q3. What is css and types of css.

Ans.

CSS stands for Cascading Style Sheets. It is used to style and layout web pages.

  • CSS is used to add styles to HTML elements.

  • There are three types of CSS: inline, internal, and external.

  • Inline CSS is applied directly to an HTML element using the style attribute.

  • Internal CSS is defined in the head section of an HTML document using the style tag.

  • External CSS is defined in a separate file and linked to the HTML document using the link tag.

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Q4. What you expected CTC from us.

Ans.

I am open to negotiation based on the job requirements and responsibilities.

  • I would like to know more about the job responsibilities and requirements before discussing salary.

  • I am looking for a fair compensation based on my skills and experience.

  • I am open to discussing benefits and other perks in addition to salary.

  • I am flexible and willing to negotiate based on the overall package offered.

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Q5. What is anonymous function?

Ans.

An anonymous function is a function without a name, defined using function keyword and can be assigned to a variable.

  • Anonymous functions are often used as callbacks or event handlers.

  • They can be passed as arguments to other functions.

  • They can be used to create closures.

  • Example: const add = function(a, b) { return a + b; }

  • Example: setTimeout(function() { console.log('Hello World!'); }, 1000);

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Q6. What is flexbox in css.

Ans.

Flexbox is a layout mode in CSS that allows you to create flexible and responsive layouts.

  • Flexbox is used to align and distribute space among items in a container.

  • It allows you to easily create complex layouts without using floats or positioning.

  • Flexbox properties include display, flex-direction, justify-content, align-items, and flex-wrap.

  • Example: display: flex; flex-direction: row; justify-content: space-between; align-items: center;

  • Example: display: flex; flex-wrap: wrap; ...read more

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Q7. Difference between let and var.

Ans.

let and var are both used for variable declaration in JavaScript, but they have some differences.

  • let has block scope, while var has function scope

  • let cannot be redeclared in the same scope, while var can

  • let is not hoisted, while var is

  • let is a relatively new addition to JavaScript (ES6), while var has been around since the beginning

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Q8. Difference between null and undefined

Ans.

null means absence of value while undefined means a variable has been declared but not assigned a value.

  • null is a value that represents no value or an empty value

  • undefined means a variable has been declared but not assigned a value

  • null is a primitive value while undefined is a type

  • null is explicitly set while undefined is implicit

  • null is falsy while undefined is also falsy

  • null is an object while undefined is not an object

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Q9. Data types in javascript?

Ans.

JavaScript has 7 primitive data types: string, number, boolean, null, undefined, symbol, and bigint.

  • String: a sequence of characters enclosed in quotes

  • Number: integer or floating-point number

  • Boolean: true or false

  • Null: intentional absence of any object value

  • Undefined: a declared variable without a value

  • Symbol: a unique identifier

  • Bigint: an integer with arbitrary precision

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