Li Ihor embarq

React Interview Questions

Requirements:

When form control has one or more validation errors, print respective messages under input
When form control has invalid state, style its input, label and error message as invalid/danger.
When form control becomes valid, style its input and label as valid/successfull.
Each form has submit button. This button should be disabled until the form will have a valid value in it.

> npm install bootstrap jquery popper.js

Add bootstrap styles, scripts and bootstrap dependencies(popper.js and jquery for ^4.0.0 version) to the .angular-cli.json. Assets paths should be relative to an app root(src by default)

	export const HallOfFame = (function() {

	/** @argument {Array<any>} players */
	const sortPlayers = (players) => {
	return players.slice().sort((a, b) => {
	if (a.length !== 2 \|\| b.length !== 2) {
	console.log('[sortPlayers:except]', a, b);
	return -1;
	}

	@Directive({
	selector: '[openNextField]'
	})
	/**
	* @example
	* <form>
	* <ion-list>
	* <ion-item>
	* <ion-label>Text field</ion-label>
	* <ion-input [openNextField]="selectFieldRef"></ion-input>


	const { PI } = Math;

	class Toolbar {
	constructor(toolbarId) {
	const element = document.getElementById(toolbarId);
	this.form = element;
	this.value = null;

	this.setValue();