Embeer.js EmberArray reject()用法及代码示例

Ember.js 是一个开源 JavaScript 框架，用于开发基于 Model-View-Controller (MVC) 架构的大型客户端 Web 应用程序。 Ember.js是使用最广泛的前端应用框架之一。它的目的是加速开发并提高生产力。目前，它被大量网站使用，包括 Square、Discourse、Groupon、Linked In、Live Nation、Twitch 和 Chipotle。

reject()方法用于获取所有错误值来测试函数。该方法是过滤器的逆方法。

用法:

reject( callback, target );

参数：

callback: 这是将在每个函数上执行的回调。
target: 它是回调执行的目标项。

返回值：被拒绝的数组。

安装和擦除 Ember.js 代码的步骤：

要运行以下示例，您需要有一个 ember 项目。要创建一个，您需要先安装ember-cli。在终端中写入以下代码：

npm install ember-cli

现在您可以通过输入以下代码来创建项目：

ember new <project-name> --lang en

要启动服务器，请键入：

ember serve

示例 1：键入以下代码以生成本示例的路由：

ember generate route reject1

应用程序/路线/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); 
    } 
}

应用程序/控制器/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`) 
        }, 
    }, 
});

应用程序/模板/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: 访问 localhost:4200/reject1 查看输出

Ember.js EmberArray 拒绝方法

示例 2：键入以下代码以生成本示例的路由：

ember generate route reject2

应用程序/路线/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); 
    } 
}

应用程序/控制器/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}`); 
        }, 
    }, 
});

应用程序/模板/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: 访问 localhost:4200/reject2 查看输出

Ember.js EmberArray 拒绝方法

参考：https://api.emberjs.com/ember/2.14/classes/Ember.Array/methods/reject?anchor=reject

相关用法

注：本文由纯净天空筛选整理自satyam00so大神的英文原创作品 Ember.js EmberArray reject() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。