/TypeScript/Angular conditional directives

Angular conditional directives

//if 
<div *ngIf='[condition]'> </div>   
  //if [condition]==true the div will be shown

//for 
<div *ngFor='let [data] of [dataArray]; let i=index;'>
  <h2> {{i}} {{data.title}} </h2>
  <img src='{{data.image}}' />
  </div>   
  //the data contained in an array will be displayed element by element
  //similar to the function .map() in React

// ngStyle (conditional Style)
<div *ngFor='let [data] of [dataArray]; let i=index;'>
  <h2 [style.background]="i>1? 'green': 'red'"> {{i}} {{data.title}} </h2>

  </div> 

//if the index of the element is 1 or 0, the background will be red, if it is over 1 the background will be green

-1

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