Display first element of array without looping

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I have an array that i want to display from it the first item in a span .

At the moment i'm getting all the value instead of only the first one.

<div class="card">  
  <div *ngIf="selectedUser._id">
    <div class="user" *ngFor="let user of users">
       <span> {{ user.event }} </span>
    </div>
  </div>
</div>

It's returning me the list of all users date event, i only want the first one

I also tried to add user.event[0] not working it's displaying me the first char of the date

my array of object

[
   {
      id:XYZ, 
      event: Fri Jul 20 2018 15:00:04 GMT+0200 (CEST)
   }, {
      id:XYZ1, 
      name: Fri Jul 10 2018 15:00:04 GMT+0200 (CEST)
   }, {
      id:XYZ2, 
      name: Fri Aug 20 2018 15:00:04 GMT+0200 (CEST)
   }
]

I tried this solution that is working and achieving what i want

<div class="message" *ngFor="let user of users | slice:0:1;"> 

But I know this is looping through the array, I need to get the first element without doing it.

I already tried this :

<span> {{ users[0].event }} </span>

it's throwing me an error cause sometimes the event is undefined

You should check if array item is empty or not

<span> {{ users && users.length ? users[0].event : '' }} </span>

How To Get The First Element Of An Array In PHP?, Get First Element Of An Array With Sequential Numeric Indexes · Get as $name​) break; // break loop after first iteration echo $name; // output: 'john' we've obtained the first element of the array without affecting the original. Displaying single element of an array By using key we can display any element of an array. document.write(scripts[2]); // Output is JavaScript Returning Last element of the Array The first element starts from 0 hence to show the last element of the array we have subtract one from total number of elements present in the array.

Use the safe navigation operator i.e. ? to make sure the users array is checked for undefined.

The Angular safe navigation operator (?.) is a more fluent and convenient way to guard against nulls in property paths. The expression bails out when it hits the first null value. The display is blank, but the app keeps rolling without errors.

<span *ngIf="users[0]">
    {{ users[0]?.event }}
</span>

Link to StackBlitz Demo.

How to print an Array in Java without using Loop, Loop method: The first thing that comes to mind is to write a for loop from i = 0 to n​, and print each element by arr[i]. for(int i = 0; i < Array.length; i++) System.out. 33. VBA Tips - Output Array without looping. Submitted by Nick on 11 May, 2011 - 13:04. A common approach to outputting an array is to loop through each element of the array, and write each element to an Excel cell. This methodology however is very inefficient. If you have a big array, you will really notice that performance is awful

I think the simplest solution will be to write a method firstUser() in your Component class.

Your typescript file should contain

firstUser () {
  return this.users[0];
}

This just keeps your html section as clean as possible. Chances are big that you will need to use it twice anyway:

    <div class="user" *ngIf="firstUser" >
         <span>  {{ firstUser.event }} </span>
    </div>

You may even want to print a message like "no user found" instead.

How to get the first element of an array in PHP?, There are several methods to get the first element of an array in PHP. Some of the Output: geeks. Using foreach loop: filter_none. edit close. play_arrow. link Arrays and loops. One of the nice things about arrays is that you can use a loop to manipulate each element. When an array is declared, the values of each element are not set to zero automatically. In some cases you want to “re-initialize” the array (which means, setting every element to zero).

Just try this:

<span> {{ users[0]?.event }} </span> 

Arrays, For example, a queue of messages that need to be shown on-screen. Extracts the first element of the array and returns it: The for..in loop is optimized for generic objects, not arrays, and thus is 10-100 times slower. which is a number​, then it creates an array without items, but with the given length. The Basic For Loop. JavaScript for loops iterate over each item in an array. JavaScript arrays are zero based, which means the first item is referenced with an index of 0. Referencing items in arrays is done with a numeric index, starting at zero and ending with the array length minus 1.

Array.prototype.shift(), The shift() method removes the first element from an array and returns The following code displays the myFish array before and after removing its first element. The shift() method is often used in condition inside while loop. How to write a C Program to Print Elements in an Array using For Loop, While Loop, and Functions with example. This program to print an array in c allows the user to enter the Size and the row elements of One Dimensional Array. Next, we are using For Loop to iterate the array values and print all the elements in this array.

array_filter - Manual, 5, PHP 7). array_filter — Filters elements of an array using a callback function The above example will output: Odd : Array ( [a] indexed arrays. You can't use a for loop on $array above without processing it through array_values() first. Java provides a way to use the “for” loop that will iterate through each element of the array. Here is the code for the array that we had declared earlier- for (String strTemp : arrData) { System.out.println (strTemp); } You can see the difference between the loops. The code has reduced significantly. Also, there is no use of the index or

array_walk - Manual, The array parameter's value being the first, and the key/index second. Note: We can make that with this simple FOREACH loop : Notice at the last line of output that outside of array_walk() the $num parameter has initial value of 1. Now $num has changed so we are able to count the items (without calling count()​  The PHP reset() function not only resets the internal pointer of the array to the start of the array, but also returns the first array element, or false if the array is empty. This method has a simple syntax and support for older PHP versions:

Comments
  • users[0]?.event
  • chances are big that you want to make the entire div or span conditional to the existence of users[0], which leads me to the conclusion that you want to centralize it in a method firstUser, see below.
  • the question remains, do you even want an empty span if there is no user. Perhaps you don't want to print the span all together in that case. Or perhaps you want to print "no user found"
  • @bvdb add an *ngIf then, see the updated answer and demo.
  • indeed, but then you don't need the ? operator, right ?