Website Developer Questions And Answers

1⟩ Please explain what is CORS? How does it work?

(CORS) Cross-Origin Resource Sharing is a mechanism that enables many resources (e.g., JavaScript, fonts etc.) on a web page to be requested from another domain outside the domain from which the resource originated. It is a mechanism supported in HTML5 that manages XMLHttpRequest access to a domain different.

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2⟩ Explain me what is the correct way to include JavaScript into your HTML?

The correct way to include JavaScript into your HTML is by using inline event handlers or inline code.

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3⟩ Tell me the new APIs provided by HTML 5 standard?

HTML 5 comes with number of new APIs

☛ Media API

☛ Text track API

☛ Application Cache API

☛ Data transfer API

☛ User Interaction

☛ Command API

☛ Constraint Validation API

☛ History API

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4⟩ Do you know what Is SVG And Why Do You Use It?

SVG is an acronym for Scalable Vector Graphics as recommended by W3C.

☛ Its purpose is to display the vector-based graphics over the Web.

☛ The graphics use an XML format.

☛ SVG graphics are of higher quality and does not lose it even when resized.

☛ All elements and attributes of SVG support animation.

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5⟩ Tell me how Does CSS3 Support The Responsive Web Designing?

CSS3 has come up with a media query feature. It supports RWD (Responsive Web Design) and does help in making a website responsive.

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6⟩ Tell me what Are Child Selectors In CSS?

A child selector looks up for the child of some element. To form a child selector, we need two or more selectors separated by “greater than” symbol.

Let’s take an example. We have a <ul> tag inside a paragraph. Here, <ul> is the child of the paragraph element. So, to apply the CSS styles, we can use the following syntax.

p > ul { font-size:15px; }

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7⟩ Tell me what Is CSS Box Model And What Are Its Components?

It is common in HTML to term all of its elements as Boxes. Similarly, in CSS, Box Model refers to modeling the design and layout of its elements. It has primarily four core components.

☛ Margin – It refers to the top most layer of the box.

☛ Border – The padding and content options work around the Border. Changing the background color can also affect the Border.

☛ Padding – It defines spacing around the box.

☛ Content – It represents the actual content to be shown.

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8⟩ Tell us how Do You Add Comments In CSS?

It is just the same in CSS as we do in JavaScript. Place the comments inside the enclosing /* and */.

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9⟩ Tell me how Do You Change The Style/Class On Any Element From JavaScript?

Following JavaScript will modify the style/class of an HTML element.

document.getElementById(“input”).style.fontSize = “10”;

-or-

document.getElementById(“button”).className = “classname”;

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10⟩ Do you know what Is Scope In JavaScript?

The general meaning of scope is the accessibility of functions and variables in an application. Usually, we use them in two ways i.e. Local and Global.

A) Local Scope.

If we declare a function or variable inside a function, then we can access it only inside that function.

// code here can not use myLocalVar

function myFunction() {

var myLocalVar = "I'm Local";

// code here can use myLocalVar

}

B) Global Scope.

Declaring a variable anywhere on the page would mean that we can access it from any of the functions on that page.

var myGlobalVar = "I'm Global";

// code here can use myGlobalVar

function myFunction() {

// code here can use myGlobalVar

}

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11⟩ Tell me what Are == And === Operators In JavaScript And How Do They Differ?

The = (assigment operator) , == and === (relational operator) please explain the difference between these 3 operators in JavaScript; along with relevant examples. And what do we mean by type type conversion in===,please explain with example.And why does

3==='3'//false

3==="3"//false

"3"==3//true

3===3//true

also why does

3==3//true

"3"==3//true

3=='3'//true

1==true//true

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12⟩ Tell me what Are The Core Data Types Available In JavaScript?

Below is the list of data types available in JavaScript.

☛ Number

☛ Object

☛ String

☛ Boolean

☛ Function

☛ Null

☛ Undefined

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13⟩ Do you know what Is Webkit In CSS3? And Why Is It Used?

Webkit is a core software component which is responsible for rendering HTML and CSS in browsers like Safari and Chrome. There are other similar rendering engines like Gecko for Mozilla, Presto for Opera, and Edge for IE.

To enable Webkit on a web page, it requires prefixing the <-webkit> keyword with CSS values.

Here is an example CSS using the Webkit feature.

.box_shadow {

-webkit-box-shadow: 0px 0px 5px 0px #ffffff;

box-shadow: 0px 0px 5px 0px #ffffff;

}

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14⟩ Do you know what Is A CSS Selector?

CSS selector is an expression following the CSS rules and used to select the element we want to style. And CSS selector syntax means how we write or use those selectors in the CSS editor.

Please note that a CSS selector can help you find or select HTML elements based on their name, id, class, attribute, and more.

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15⟩ Explain me what Are The Various Elements HTML5 Has Added For Media Content?

Following HTML5 elements supports media content.

☛ <audio> – It specifies sound content.

☛ <video> – It links to a video.

☛ <source> – This tag specified the source of video and audio links.

☛ <embed> – It acts as a container for external applications.

☛ <track> – This element defines tracks for video and audio.

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16⟩ Do you know how XHTML is different from HTML?

☛ XHTML requires that all tags should be in lowercase

☛ XHTML requires that all tags should be closed properly

☛ XHTML requires that all attributes are enclosed in double quotes

☛ XHTML forbids inline elements from containing block level elements

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17⟩ Do you know what is an ETag and how does it work?

An ETag is an opaque identifier allocated by a web server to a specific version of a resource found at a URL. The ETag is a part of HTTP, the protocol for the world wide web and when the server reads the ETag from client request, the server can then tell whether to send the file (HTTP 200) or tell the client just to use their local copy (HTTP 304).

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18⟩ Tell me what are the key responsibilities of a Web Developer?

☛ Program test and debug all web applications

☛ Design, develop, test and deploy web applications

☛ Uploading sites onto server and registering it with different search engines

☛ Coordinate with other designers and programmers to develop web projects

☛ Fix bugs, troubleshoot and resolve problems

☛ In case of system failure initiate periodic testing and implement contingency plans

☛ Develop appropriate code structures to solve specific tasks

☛ Support and assist in the upkeep and maintenance of websites

☛ Assume ownership of code throughout staging, development, testing and production

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19⟩ I just pulled up the website you built and the browser is displaying a blank page. Walk me through the steps you'd take to troubleshoot the problem?

This is a great question to determine how well rounded their abilites are. It tests everything from basic support skills all the way up to troubleshooting the webserver itself.

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20⟩ Tell us what are a few of your favorite development tools and why?

If they say notepad you've obviously got the wrong person for the job. Not only can this help you gauge their level of competence, but it'll also see if they match the tools everyone else uses in-house.

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80 Website Developer Questions And Answers

1⟩ Please explain what is CORS? How does it work?

2⟩ Explain me what is the correct way to include JavaScript into your HTML?

3⟩ Tell me the new APIs provided by HTML 5 standard?

4⟩ Do you know what Is SVG And Why Do You Use It?

5⟩ Tell me how Does CSS3 Support The Responsive Web Designing?

6⟩ Tell me what Are Child Selectors In CSS?

7⟩ Tell me what Is CSS Box Model And What Are Its Components?

8⟩ Tell us how Do You Add Comments In CSS?

9⟩ Tell me how Do You Change The Style/Class On Any Element From JavaScript?

10⟩ Do you know what Is Scope In JavaScript?

11⟩ Tell me what Are == And === Operators In JavaScript And How Do They Differ?

12⟩ Tell me what Are The Core Data Types Available In JavaScript?

13⟩ Do you know what Is Webkit In CSS3? And Why Is It Used?

14⟩ Do you know what Is A CSS Selector?

15⟩ Explain me what Are The Various Elements HTML5 Has Added For Media Content?

16⟩ Do you know how XHTML is different from HTML?

17⟩ Do you know what is an ETag and how does it work?

18⟩ Tell me what are the key responsibilities of a Web Developer?

19⟩ I just pulled up the website you built and the browser is displaying a blank page. Walk me through the steps you'd take to troubleshoot the problem?

20⟩ Tell us what are a few of your favorite development tools and why?

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Website Developer

Home Web Development Website Developer

80 Website Developer Questions And Answers

1⟩ Please explain what is CORS? How does it work?

2⟩ Explain me what is the correct way to include JavaScript into your HTML?

3⟩ Tell me the new APIs provided by HTML 5 standard?

4⟩ Do you know what Is SVG And Why Do You Use It?

5⟩ Tell me how Does CSS3 Support The Responsive Web Designing?

6⟩ Tell me what Are Child Selectors In CSS?

7⟩ Tell me what Is CSS Box Model And What Are Its Components?

8⟩ Tell us how Do You Add Comments In CSS?

9⟩ Tell me how Do You Change The Style/Class On Any Element From JavaScript?

10⟩ Do you know what Is Scope In JavaScript?

11⟩ Tell me what Are == And === Operators In JavaScript And How Do They Differ?

12⟩ Tell me what Are The Core Data Types Available In JavaScript?

13⟩ Do you know what Is Webkit In CSS3? And Why Is It Used?

14⟩ Do you know what Is A CSS Selector?

15⟩ Explain me what Are The Various Elements HTML5 Has Added For Media Content?

16⟩ Do you know how XHTML is different from HTML?

17⟩ Do you know what is an ETag and how does it work?

18⟩ Tell me what are the key responsibilities of a Web Developer?

19⟩ I just pulled up the website you built and the browser is displaying a blank page. Walk me through the steps you'd take to troubleshoot the problem?

20⟩ Tell us what are a few of your favorite development tools and why?

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