ngfor
<li *ngFor="let item of items; index as i; trackBy: trackByFn">...</li>ngfor
<li *ngFor="let item of items; index as i; trackBy: trackByFn">...</li>represent array items angular
//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 Reacttypescript array
let list: number[] = [1, 2, 3];typing arrays
// Arrays are variables containing multiple pieces of data.
myArray = ["value1", 2, 3, "insert fourth value here"];
// To retrieve data, you reference them via index numbers.
// KEEP IN MIND that when referencing array values, index numbers
// start at 1, not zero.
myArray[0] = "value1";
myArray[1] = 2;
myArray[3] = "insert fourth value here";Copyright © 2021 Codeinu
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