ShubhamLaad

<!-- title tags -->
<title itemprop="name">{{ .Title }} | {{ .Site.Title }}</title>
<meta property="og:title" content="{{ .Title }} | {{ .Site.Title }}" />
<meta name="twitter:title" content="{{ .Title }} | {{ .Site.Title }}" />
<meta itemprop="name" content="{{ .Title }} | {{ .Site.Title }}" />
<meta name="application-name" content="{{ .Title }} | {{ .Site.Title }}" />
<meta property="og:site_name" content="{{ .Site.Params.sitename }}" />
<!-- description tags -->
<meta name="description" content="{{ .Description }} | {{ .Site.Params.description }}" />
<meta itemprop="description" content="{{ .Description }} | {{ .Site.Params.description }}" />

ShubhamLaad

13-01-2020
- withRouter hoc to use for routing
- for active link use NavLink component
- <Switch> render on one component at time from <Router> 
- <Ruter path="/post"> <Router path="/:id"> both renderred so use Switch for render only one, here post treaded as id
- 

ShubhamLaad

var trees = ["pine","apple","oak","maple","cherry"];
delete trees[3];
console.log(trees.length);

ShubhamLaad

const length = 4;
const numbers = [];
for (var i = 0; i < length; i++);{
  numbers.push(i + 1);
}

numbers; // => ???

ShubhamLaad

const b = {
  a: [1],
  b: {
    a: [2], 
    b: {
      c: [3],
      d: [4]
    }
  },
  c:'2',

ShubhamLaad

const arr = [10, 12, 15, 21];
for (var i = 0; i < arr.length; i++) {
setTimeout(function() {
console.log(`The value ${arr[i]} is at index: ${i}`);
}, (i+1) * 1000);
}

ShubhamLaad

{ /* Original code */
 console.log(i); 
 var i = 10
 console.log(i); // 10
}
{ /* Compilation phase */
 var i;
 console.log(i);
 i = 10
 console.log(i); // 10

ShubhamLaad

function outer() {
  let a = 1;
  function inner() {
    let b = 2;
    function innermost() {
      let c = 3;
      console.log(a, b, c);   // 1 2 3
    }
    innermost();
    console.log(a, b);        // 1 2 — 'c' is not defined

ShubhamLaad

1 + "2" = "12"
"" + 1 + 0 = "10"
"" - 1 + 0 = -1
"-9\n" + 5 = "-9\n5"
"-9\n" - 5 = -14
"2" * "3" = 6
4 + 5 + "px" = "9px"
"$" + 4 + 5 = "$45"
"4" - 2 = 2
"4px" - 2 = NaN

ShubhamLaad

import { ofType } from 'redux-observable';
import { map, switchMap, takeUntil } from 'rxjs/operators';
import { Actions } from '../constants/action-constant';
import { ajax } from 'rxjs/ajax';
import { fetchNextRaceFulfill, onRaceListSuccess } from '../actions/racing-action';
import apiConstant from '../constants/api-constant';
import { Race, RaceData } from '../types/racing';

export const fetchNextToRaceEpic = (action$: any) => action$.pipe(
  ofType(Actions.FETCH_NEXT_RACE),