Answers for "javascript count array items"

PHP
30

array count items

<?php
	$arr = ["one", "two", "three", "four"];
	echo count($arr);
  ?>
Posted by: Guest on December-29-2019
20

array length javascript

var arr = [10,20,30,40,50]; //An Array is defined with 5 instances

var len= arr.length;  //Now arr.length returns 5.Basically, len=5.
console.log(len); //gives 5
console.log(arr.length); //also gives 5
Posted by: Guest on May-08-2020
8

javascript size array

let array = [1, 2, 3];
console.log(array.length);
Posted by: Guest on May-25-2020
-2

typescript count array condition

let data = [ { "id": 1, "is_read": true, }, { "id": 2, "is_read": true, }, { "id": 3, "is_read": false, }, { "id": 4, "is_read": true, }, ],
length = data.filter(function(item){
  return item.is_read;
}).length;
console.log(length)
Posted by: Guest on October-23-2020

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