Ember.js EmberArray reject() Method
Ember.js is an open-source JavaScript framework used for developing large client-side web applications which is 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 reject() method is used to get all the false values to test the function. This method is the inverse of the filter.
Syntax:
reject( callback, target );
Parameters:
- callback: It is the callback that will execute on each function.
- target: It is the target item on which callback perform.
Return Value: A rejected Array.
Steps to Install and Rub Ember.js Code:
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
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 reject1
app/routes/reject1.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); controller.set( 'item2' , this .item2); } } |
app/controllers/reject1.js
import Ember from 'ember' ; import { pushObjects, isAny } from '@ember/array' ; export default Ember.Controller.extend({ actions: { Check_item(data, data1) { data1 = (data == 'isFruit' ) ? JSON.parse(data1) : data1; let ans = this .item1.reject((item ) => item[data] == data1); let temp = '' ; for (let i = 0; i< ans.length ; i++) temp += ans[i].name + '\n' ; ans ? alert(temp) : alert(`It doesn't contains any Falsely value`) }, }, }); |
app/templates/reject1.hbs
{{page-title "Fruits" }} <table style= " border-spacing : 30px" > <h3>Here is a Bucket: </h3> <ul> {{ #each @model as |eatable|}} <li>{{eatable.name}}</li> {{/each}} </ul> </table> <br /><br /> <div> <label> Enter Attribute: </label> {{input value= this .temp1}} </div> <div> <label> Enter value for falsely match: </label> {{input value= this .temp2}} </div> <br /> <input type= "button" id= "fruit-all" value= "List Contains Any Fruit?" {{action "Check_item" this .temp1 this .temp2}} /> {{outlet}} |
- Output: Visit localhost:4200/reject1 to view the output
Example 2: Type the following code to generate the route for this example:
ember generate route reject2
app/routes/reject2.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/reject2.js
import Ember from 'ember' ; import { addObjects, shiftObject, setEach } from '@ember/array' ; export default Ember.Controller.extend({ actions: { checkCity(city) { let foo = this .details.reject((person) => person.city == this .city); let temp = '' ; for (let i = 0; i< foo.length ; i++) temp += foo[i].name + " from " + foo[i].city + '\n' ; foo ? alert(`${temp}`) : alert(`No falsely value present of city ${city}`); }, checkName(name) { let foo = this .details.reject((person) => person.name == this .name ); let temp = '' ; for (let i = 0; i< foo.length ; i++) temp += foo[i].name + " from " + foo[i].city + '\n' ; foo ? alert(`${temp} `) : alert(`No one of ${name}`); }, checkCode(code) { let foo = this .details.reject((person) => person.zipCode == this .code ); let temp = '' ; for (let i = 0; i< foo.length ; i++) temp += foo[i].name + " from " + foo[i].zipCode + '\n' ; foo ? alert(`${temp} `) : alert(`No one of ${cod}`); }, }, }); |
app/templates/reject2.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 outside 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 not match 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 whose name is not Name" {{action 'checkName' this .name}} /> </div> {{outlet}} |
- Output: Visit localhost:4200/reject2 to view the output
Reference: https://api.emberjs.com/ember/2.14/classes/Ember.Array/methods/reject?anchor=reject
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