IMPORTANT AngularJS Interview Questions

Question

AngularJS has seen exponential growth in popularity and career opportunities in the recent years. Let's use this thread to share your knowledge, experience or ask any questions regarding AngularJS interview. If you don't know where to start, you can start with this link: https://bit.ly/2nV7Tcs

Answer 1

IT technicians have started realizing that user experience matters the most when it comes to selling a product. So yes, AngularJS has a lot of opportunities. 

Hope it helps!!

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Thank you!!

Answer 2

Hello, I have attended a few interviews and one question asked in almost every interview is:

What is the main thing that you would need to change if you were migrating from AngularJS 1.4 to AngularJS 1.5? 

And the answer is:

To adapt to the new AngularJS 1.5 components, you would need to change .directive to .component

Comments

Hey Satish, thank you for sharing your experience. Appreciate it!

Answer 3

Hi Sir, can you tel which are the different types of directives in AngularJS? This question was asked in my previous interview

Comments

There are four types of directives:

-> Comment directives
-> CSS class directives
-> Attribute directives
-> Element directives

Answer 4

Hello guys. I have started to learn Angular recently. Can anybody explain the uses for the directives:

• ngBind,
• ngModel
• ngClass
• ngApp
• ngInit
• ngRepeat

Thanks in Advance

Comments

ng-bind

This directive updates the text content of the specified HTML element with the value of the given expression and the text content is changing on expression changes. It is very similar to double curly markup ( {{expression }}) but less verbose.

Syntax

<ANY ELEMENT ng-bind="expression"> </ANY ELEMENT>   
Ng-bind-html

It (whatever it is) evaluates the expression and inserts the HTML content into the element in a secure way. It uses the $sanitize service, so to use this functionality, be sure that $sanitize is available.

Syntax
<ANY ELEMENT ng-bind-html=" expression "> </ANY ELEMENT>   
ng-bind-template

It (whatever it is) replaces the element text content with the interpolation of the template. It can contain multiple double curly markups.

Syntax
<ANY ELEMENT ng-bind-template=" {{expression1}} {{expression2}} … {{expressionn}} "> </ANY ELEMENT>   
ng-non-bindable

This (whatever "this" is) directive informs AngularJs to not compile or bind the contents of the current DOM element This element is useful when we want to display the expression but it should not be executed by AngularJs.

Syntax

<ANY ELEMENT ng-non-bindable > </ANY ELEMENT>

ng-model

This (whatever "this" is) directive can be bound with input, select, text area or any custom form control. It provides two-way binding. It also provides validation behavior. It also keeps the state of the control (valid/invalid, dirty/pristine, touched/untouched and so on).

Syntax

<input ng-bind="expression"/>

Answer 5

Can you explain some filters in AngularJS, please?

Comments

Filters:
currency
date
filter
json
limitTo
lowercase
number
orderBy
uppercase
Currency It will change all the digits to currency and "$" is the default currency.

{{ x | currency}}

Output
Output

Date

It will change all the digits into the date according to some rules, like the default date will be "44 years 2 months 10 days" earliar and 1000 will add 1 second into it.

{{ x | date:'medium' }}

Output Change the 1 and 1000 into dates.

Output

Filter

{{ filter_expression | filter : expression : comparator}}

limitTo

It will show the values depending on the limit of an array variable that has been set.

{{ names | limitTo:2 }}

Output

Output

Here the limit is 2, so you can only see 2 values.

lowercase

It will change all the letters into lowercase as in the following:

{{ x | lowercase }}

Output

Output

Number

It will show all the digits with 3 decimal places by default as in the following:

{{ x | number:8}}

Output I am using 8 here.

Output

OrderBy

{{ orderBy_expression | orderBy : expression : reverse}}

uppercase

It will change all the letters to uppercase.

{{ x | uppercase }}

Output

Output

Answer 6

You can just go through with this post to get more question for preparing for angular technology.

Comments

Thanks for the post Vijay. I'm sure it'll be helpful to a lot of our members.

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@Vijay, the content is good but its limited. The number of questions can be more in numbers.

Thank you @Omkar for the blog it is good way to start the last minute preparations.

Answer 7

Hey @Omkar, I was asked if Angular use the jQuery library? I think it does but I'm not sure, can you please help me out here? 

Comments

Hey @Lisa, thanks for approaching us. 

Yes, Angular can use jQuery if it’s present in the app when the application is being bootstrapped. If jQuery is not present in the script path, Angular falls back to its own implementation of the subset of jQuery that we call jQLite.

Answer 8

Yes, I agree with Omkar AngularJs is covering the web market very fastly. A lot of companies are recruiting on AngularJs. In the last two years, the Angular community has released more than 6 versions of Angular which creates confusion which to learn.  So while preparing Interviews on angular take a look to questions asked from this link. 

https://goo.gl/kbW32J

Comments

Thanks! This seems useful :)

Answer 9

Are you Preparing for Angularjs interview question here list of most asked Top 20 Angularjs interview questions and answers