ashish2199

Answering the Front-end developer JavaScript interview questions to the best of my ability.

• Explain event delegation

Sometimes you need to delegate events to things.

• Explain how this works in JavaScript

This references the object or "thing" defined elsewhere. It's like "hey, thing I defined elsewhere, I'm talkin' to you."

• Explain how prototypal inheritance works.

ashish2199

1. Write poly-fill of Object.create and explain why it worked:

if(typeof Object.create != "function") {
    Object.create = function(param) {
        var Fun = function(){};
        Fun.prototype = param;
        return new Fun();
    }
}

ashish2199

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

ashish2199

import Component from '@glimmer/component';

export default class extends Component {
}

ashish2199

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

ashish2199

To create a Table

	create table risk_clos_rank(
		id_num int IDENTITY(1,1) NOT NULL,
	    username nvarchar(100),
	    datetime_of_decision DATETIME
	);
	
	CREATE TABLE TheNameOfYourTable (
 ID INT NOT NULL IDENTITY(1,1),

ashish2199

To initialise a new git repository
	git init

To download a repository from a website
	git clone https://github.com/tutorialzine/awesome-project.git

To remove commits from github.
	git log 
		to find out the commit you want to revert
	git push origin +7f6d03:master 

ashish2199

#
# Project specific excludes
#

tomcat

#
# Default excludes
#

ashish2199

All challenges. I lied a bit, these are actually in **reverse** chronological order, to make it less annoying to use on mobile devices.

Easy | Intermediate | Hard | Weekly/Bonus
-----|--------------|------|-------------
| []() | []() | []() | **-** |
| [[2016-02-22] Challenge #255 [Easy] Playing with light switches](/r/dailyprogrammer/comments/46zm8m/20160222_challenge_255_easy_playing_with_light/) | [[2016-02-24] Challenge #255 [Intermediate] Ambiguous Bases](/r/dailyprogrammer/comments/47docs/20160224_challenge_255_intermediate_ambiguous/)| [[2016-02-26] Challenge #255 [Hard] Hacking a search engine](/r/dailyprogrammer/comments/47o4b6/20160226_challenge_255_hard_hacking_a_search/) | **-** |
| [[2016-02-16] Challenge #254 [Easy] Atbash Cipher](/r/dailyprogrammer/comments/45w6ad/20160216_challenge_254_easy_atbash_cipher/)| [[2016-02-17] Challenge #254 [Intermediate] Finding Legal Reversi Moves](/r/dailyprogrammer/comments/468pvf/20160217_challenge_254_intermediate_finding_legal/)| [[2016-02-19] Challenge #25

ashish2199

All challenges. I lied a bit, these are actually in **reverse** chronological order, to make it less annoying to use on mobile devices.

Easy | Intermediate | Hard | Weekly/Bonus
-----|--------------|------|-------------
| []() | []() | []() | **-** |
| [[2015-08-03] Challenge #226 [Easy] Adding fractions](/r/dailyprogrammer/comments/3fmke1/20150803_challenge_226_easy_adding_fractions/) | []() | []() | **-** |
| [[2015-07-27] Challenge #225 [Easy/Intermediate] De-columnizing](/r/dailyprogrammer/comments/3esrkm/20150727_challenge_225_easyintermediate/) | [[2015-07-29] Challenge #225 [Intermediate] Estimating pi from images of circles](/r/dailyprogrammer/comments/3f0hzk/20150729_challenge_225_intermediate_estimating_pi/) | [[2015-07-31] Challenge #225 [Intermediate] Diagonal Maze](https://www.reddit.com/r/dailyprogrammer/comments/3f9o7k/20150731_challenge_225_intermediate_diagonal_maze/) | **-** |
| [[2015-07-20] Challenge #224 [Easy] Shuffling a List](/r/dailyprogrammer/comments/3e0hmh/20150720_challenge_224_e