Ember.js EmberArray find() Method
Last Updated :
22 Dec, 2022
Ember.js is an open-source JavaScript framework used for developing large client-side web applications based on Model-View-Controller (MVC) architecture. Ember.js is one of the most widely used front-end application frameworks. It is made to speed up development and increase productivity. Currently, it is utilized by a large number of websites, including Square, Discourse, Groupon, Linked In, Live Nation, Twitch, and Chipotle.
The find() method is used for the presence of an item in the list.
Syntax:
find(callback, target);
Parameters:
- callback: It is the callback function to check for the item in the list.
- target: It is the object whose elements are to be checked.
Return Value: Found item or ‘undefined’.
Steps to Install and Run Ember.js:
Step 1: To run the following examples you will need to have an ember project with you. To create one, you will need to install ember-cli first. Write the below code in the terminal:
npm install ember-cli
Step 2: Now you can create the project by typing in the following piece of code:
ember new <project-name> --lang en
To start the server, type:
ember serve
Example 1: Type the following code to generate the route for this example:
ember generate route find1
app/routes/find1.js
import Route from '@ember/routing/route' ;
export default class DetailsRoute extends Route {
details = [
{
name: 'Aaksh' ,
mobile: '9811129967' ,
city: 'Delhi' ,
country: 'India' ,
gender: 'M' ,
zipCode: '800020' ,
},
{
name: 'Sweta' ,
mobile: '9456712890' ,
city: 'Mumbai' ,
country: 'India' ,
gender: 'F' ,
zipCode: '400001' ,
},
{
name: 'Satyam' ,
mobile: '2222222222' ,
city: 'Raipur' ,
country: 'India' ,
gender: 'M' ,
zipCode: '110012' ,
},
{
name: 'Shandya' ,
mobile: '1122113322' ,
city: 'Bangalore' ,
country: 'India' ,
gender: 'F' ,
zipCode: '530068' ,
},
{
name: 'Ayushi' ,
mobile: '2244668800' ,
city: 'Thana' ,
country: 'India' ,
gender: 'F' ,
zipCode: '302001' ,
},
];
someMoreDetails = [
{
name: 'Yogesh' ,
mobile: '1133557799' ,
city: 'Chennai' ,
country: 'India' ,
gender: 'F' ,
zipCode: '600001' ,
},
{
name: 'Sunny' ,
mobile: '9911000000' ,
city: 'Masore' ,
country: 'India' ,
gender: 'M' ,
zipCode: '574142' ,
},
{
name: 'Khushi' ,
mobile: '8888888888' ,
city: 'Pune' ,
country: 'India' ,
gender: 'F' ,
zipCode: '111045' ,
},
];
city;
name;
code;
model() {
return this .details;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'details' , this .details);
controller.set( 'someMoreDetails' , this .someMoreDetails);
controller.set( 'city' , this .city);
controller.set( 'code' , this .code);
controller.set( 'name' , this .name);
}
}
|
app/controllers/find1.js
import Ember from 'ember' ;
import { addObjects, shiftObject, setEach }
from '@ember/array' ;
export default Ember.Controller.extend({
actions: {
checkCity(city) {
alert(`Name Person from ${city}:
${ this .details.find((user) =>
user.city == this .city).name}`);
},
checkName(name) {
alert(`${name} Details:
${JSON.stringify( this .details.
find((user)
=> user.name == this .name))}`);
},
checkCode(code) {
alert(`Name Person from zip-code
${code} is :
${ this .details.find((user) =>
user.zipCode == this .code).name}`);
},
},
});
|
app/templates/find1.hbs
{ { page - title "Details" } }
<h3>List of People: </h3>
<br /><br />
<table>
<tr>
<th>Name</th>
<th>Gender</th>
<th>Mobile</th>
<th>City</th>
<th>Country</th>
<th>Zip Code</th>
</tr>
{{ #each @model as |detail|}}
<tr>
<td>{{detail.name}}</td>
<td>{{detail.gender}}</td>
<td>{{detail.mobile}}</td>
<td>{{detail.city}}</td>
<td>{{detail.country}}</td>
<td>{{detail.zipCode}}</td>
</tr>
{{/each}}
</table>
<br /><br />
<div>
<label>Enter City: </label>
{{input value= this .city}}
</div>
<div>
<input
type= "button"
id= "check-city"
value= "Check Someone from City"
{{action "checkCity" this .city}}
/>
</div>
<br /><br />
<div>
<label>Enter zipCode: </label>
{{input value= this .code}}
</div>
<div>
<input
type= "button"
id= "check-code"
value= "Check Someone from Zip-Code"
{{action "checkCode" this .code}}
/>
</div><br /><br />
<div>
<label>Enter Name: </label>
{{input value= this .name}}
</div>
<div>
<input
type= "button"
id= "check-name"
value= "Check Someone by Name"
{{action "checkName" this .name}}
/>
</div>
{ { outlet } }
|
Output: Visit localhost:4200/find1 to view the output
Ember.js EmberArray find method
Example 2: Type the following code to generate the route for this example:
ember generate route find2
app/routes/find2.js
import Route from '@ember/routing/route' ;
import { } from '@ember/array' ;
export default class FruitsRoute
extends Route {
item1 = [
{
name: 'Apple' ,
isFruit: true ,
color: 'red' ,
},
{
name: 'Grapes' ,
isFruit: true ,
color: 'green' ,
},
{
name: 'Mango' ,
isFruit: true ,
color: 'yellow' ,
},
{
name: 'Watermelon' ,
isFruit: true ,
color: 'red' ,
},
{
name: 'Orange' ,
isFruit: true ,
color: 'orange' ,
},
{
name: 'Lady Finger' ,
isFruit: false ,
color: 'green' ,
},
{
name: 'Brinjal' ,
isFruit: false ,
color: 'purple' ,
},
{
name: 'Potato' ,
isFruit: false ,
color: 'brown' ,
},
{
name: 'Onion' ,
isFruit: false ,
color: 'violet' ,
},
];
model() {
return this .item1;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'item1' , this .item1);
}
}
|
app/controllers/find2.js
import Ember from 'ember' ;
import {
removeAt, unshiftObjects, objectAt,
uniqBy, find
} from '@ember/array' ;
export default Ember.Controller.extend({
actions: {
removeDetails(start, end) {
this .item1.removeAt(start, end);
},
getDetail(index) {
let foo = this .item1.objectAt(index);
alert(foo.name);
},
getFirstFruit() {
let foo = this .item1.find(
(detail) =>
detail.isFruit === false );
alert(foo.name);
},
getFirstVegy() {
let foo = this .item1.find(
(detail) =>
detail.isFruit === true );
alert(foo.name);
},
},
});
|
app/templates/find2.hbs
{{page-title "Fruits" }}
<table style= " border-spacing : 30px" >
<h3>Here is a list 1: </h3>
<ul>
{{ #each @model as |eatable|}}
<li>{{eatable.name}}</li>
{{/each}}
</ul>
</table>
<div>
<label>Enter Start Index: </label>
{{input value= this .start}}
</div>
<div>
<label>Enter End Index: </label>
{{input value= this .end}}
</div>
<div>
<input
type= "button"
id= "remove-details"
value= "Remove Details"
{{action "removeDetails" this .start this .end}}
/>
</div>
<br /><br />
<div>
<label>Enter Index: </label>
{{input value= this .idx}}
</div>
<div>
<input
type= "button"
id= "get-detail"
value= "Get detail"
{{action "getDetail" this .idx}}
/>
</div>
<br /><br />
<input
type= "button"
id= "all-male"
value= "Get First Fruit"
{{action "getFirstFruit" }}
/>
<br /><br />
<input
type= "button"
id= "get"
value= "Get First Vegetable"
{{action "getFirstVegy" }}
/>
{{outlet}}
|
Output: Visit localhost:4200/find2 to view the output
Ember.js EmberArray find method
Reference: https://api.emberjs.com/ember/4.4/classes/EmberArray/methods/find?anchor=find
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