需求：给项目管理页面加上搜索和重置的过场动画。
最先想到的就是利用angular2的animations属性。
// project.component.tsimport {trigger, state, style, animate, transition} from '@angular/animations';@Component({ selector: 'projects', template: require('./projects.html'), styleUrls: ['./projects.css'], providers: [ProjectService], animations: [ trigger('projectIn', [ state('active', style({transform: 'translateX(0)', opacity: 1})), transition('void => *', [ style({transform: 'translateX(500px)', opacity: 0}), animate('1s ease-in-out') ]) ]), ]})export class ProjectComponent{ state: tring = 'active';}// project.component.tsimport {trigger, state, style, animate, transition} from '@angular/animations';@Component({ selector: 'projects', template: require('./projects.html'), styleUrls: ['./projects.css'], providers: [ProjectService], animations: [ trigger('projectIn', [ state('active', style({transform: 'translateX(0)', opacity: 1})), transition('void => *', [ style({transform: 'translateX(500px)', opacity: 0}), animate('1s ease-in-out') ]) ]), ]})export class ProjectComponent{ state: tring = 'active';}将动画绑定在HTML模板上
<tr *ngFor="let project of projects" [@projectIn]="state"><tr *ngFor="let project of projects" [@projectIn]="state">
给重置按钮和搜索按钮也来个旋转的特效吧。
最简单的方案就是利用项目中的bootstrap库，在搜索或者重置时改变按钮内部的i标签;
首先改造HTML模板；
<button type="button" class="btn searchbtn btn-primary"(click)="search(); getProjects(pagecount.value, 1, projectName.value)"><i [ngClass]='searchClass'>{{searchValue}}</i></button>// search 按钮<button (click)="reset(); getProjects();projectName.value = '';" type="button" class="btn btn-primary"><i [ngClass] = "resetClass"></i></button> // reset 按钮<button type="button" class="btn searchbtn btn-primary"(click)="search(); getProjects(pagecount.value, 1, projectName.value)"><i [ngClass]='searchClass'>{{searchValue}}</i></button>// search 按钮<button (click)="reset(); getProjects();projectName.value = '';" type="button" class="btn btn-primary"><i [ngClass] = "resetClass"></i></button> // reset 按钮 改造ts文件
resetClass: string = 'fa fa-repeat';searchClass: string = '';searchValue: string = '搜索';reset() { this.resetClass = 'fa fa-repeat fa-spin'; setTimeout(() => this.resetClass = "fa fa-repeat", 2000); }search() { this.searchValue = ''; this.searchClass = 'fa fa-repeat fa-spin'; setTimeout(() => { this.searchClass = ''; this.searchValue = '搜索'; }, 2000) }resetClass: string = 'fa fa-repeat';searchClass: string = '';searchValue: string = '搜索';reset() { this.resetClass = 'fa fa-repeat fa-spin'; setTimeout(() => this.resetClass = "fa fa-repeat", 2000); }search() { this.searchValue = ''; this.searchClass = 'fa fa-repeat fa-spin'; setTimeout(() => { this.searchClass = ''; this.searchValue = '搜索'; }, 2000) } 原理简单粗暴 即点击触发函数改变CSS值，2秒后恢复原有CSS值。。
如果你想再加个弹窗的话可以利用现成的swalert库；
// 直接在getprojects里面加上如下代码 swal({ title: 'loading', type: 'success', timer: 1000, showConfirmButton: false, }).catch(()=>{});//即每次获取数据后触发弹窗动画。 // 直接在getprojects里面加上如下代码 swal({ title: 'loading', type: 'success', timer: 1000, showConfirmButton: false, }).catch(()=>{});//即每次获取数据后触发弹窗动画。 基本效果已经实现了，现在把效果复制到每个组件去
Excuse me???
既然要复用，那就把搜索框和重置按钮抽象成组件吧。
新建目录如下
// app.module.ts 添加如下代码
import {QbcSearchComponent} from './component/qbc-search/qbc-search.component';import {QbcResetComponent} from './component/qbc-reset/qbc-reset.component';declarations: [ QbcSearchComponent,QbcResetComponent]// app.module.ts 添加如下代码
import {QbcSearchComponent} from './component/qbc-search/qbc-search.component';import {QbcResetComponent} from './component/qbc-reset/qbc-reset.component';declarations: [ QbcSearchComponent,QbcResetComponent]//qbc-search.component.ts 添加如下代码import { Component, Output, EventEmitter} from '@angular/core';import swal from 'sweetalert2';@Component({ selector: 'qbc-search', template: require('./qbc-search.html'),})export class QbcSearchComponent { @Output() searchEmitter = new EventEmitter(); searchClass: string = ''; searchValue: string = '搜索'; constructor() {} search(value) { this.searchValue = ''; this.searchClass = 'fa fa-repeat fa-spin'; setTimeout(() => { this.searchClass = ''; this.searchValue = '搜索'; }, 2000) this.searchEmitter.emit(value); swal({ title: 'loading', type: 'success', timer: 1000, showConfirmButton: false, }).catch(()=>{}); }}//qbc-search.component.ts 添加如下代码import { Component, Output, EventEmitter} from '@angular/core';import swal from 'sweetalert2';@Component({ selector: 'qbc-search', template: require('./qbc-search.html'),})export class QbcSearchComponent { @Output() searchEmitter = new EventEmitter(); searchClass: string = ''; searchValue: string = '搜索'; constructor() {} search(value) { this.searchValue = ''; this.searchClass = 'fa fa-repeat fa-spin'; setTimeout(() => { this.searchClass = ''; this.searchValue = '搜索'; }, 2000) this.searchEmitter.emit(value); swal({ title: 'loading', type: 'success', timer: 1000, showConfirmButton: false, }).catch(()=>{}); }}//qbc-search.html <div class="input-group"> <input type="text" placeholder="请输入名称" class="searchinput form-control" #name> <span class="input-group-btn"><button type="button" class="btn searchbtn btn-primary" (click)="search(name.value);"><i [ngClass]='searchClass'>{{searchValue}}</i></button></span> </div> //qbc-search.html <div class="input-group"> <input type="text" placeholder="请输入名称" class="searchinput form-control" #name> <span class="input-group-btn"><button type="button" class="btn searchbtn btn-primary" (click)="search(name.value);"><i [ngClass]='searchClass'>{{searchValue}}</i></button></span> </div>
接下来需要改写项目HTML
//projects.html//将原先的搜索框代码部分用qbc-search代替。<qbc-search (searchEmitter)=search(pagecount.value,1,$event)></qbc-search>//projects.html//将原先的搜索框代码部分用qbc-search代替。<qbc-search (searchEmitter)=search(pagecount.value,1,$event)></qbc-search>
然后是项目TS文件
//projects.component.ts// 其实也可以直接在模板中调用getProjects方法，差不多。一个是后期要修改模板，一个是要修改TS文件。 search(pageSize, page, name) { this.getProjects(pageSize, page, name); }//projects.component.ts// 其实也可以直接在模板中调用getProjects方法，差不多。一个是后期要修改模板，一个是要修改TS文件。 search(pageSize, page, name) { this.getProjects(pageSize, page, name); }qbc-reset实现方式雷同就不赘述了。下面看看animations如何复用。
// 先试试可不可以放入app.component.ts animations: [ trigger('fadeIn', [ state('active', style({transform: 'translateX(0)', opacity: 1})), transition('void => *', [ style({transform: 'translateX(500px)', opacity: 0}), animate('1s ease-in-out') ]) ]), ]// 先试试可不可以放入app.component.ts animations: [ trigger('fadeIn', [ state('active', style({transform: 'translateX(0)', opacity: 1})), transition('void => *', [ style({transform: 'translateX(500px)', opacity: 0}), animate('1s ease-in-out') ]) ]), ]//projects.html[@fadeIn] = "state"// error The provided animation trigger "c1#fadeIn" has not been registered!//projects.html[@fadeIn] = "state"// error The provided animation trigger "c1#fadeIn" has not been registered!看来这种方式不行,在没弄清楚angular2动画全局复用机制前，我们先用原生CSS代替。
建立animation.css
.fadeIn{ animation: fadeIn ease-in-out 1.5s 1; // 参数依次为： 动画名称 缓动函数 动画时间 动画运行次数}@keyframes fadeIn{ 0% { opacity: 0; transform: translateX(500px); } 100%{ opacity: 1; transform: translateX(0); }}.fadeIn{ animation: fadeIn ease-in-out 1.5s 1; // 参数依次为： 动画名称 缓动函数 动画时间 动画运行次数}@keyframes fadeIn{ 0% { opacity: 0; transform: translateX(500px); } 100%{ opacity: 1; transform: translateX(0); }}直接在项目里引用CSS文件，并在模板里面添加class名fadeIn;
//projects.component.tsstyleUrls: ['./projects.css', '../animation.css']//projects.html<tr *ngFor="let project of projects" class="fadeIn">//projects.component.tsstyleUrls: ['./projects.css', '../animation.css']//projects.html<tr *ngFor="let project of projects" class="fadeIn">
实现效果如下
老铁还有没有更简单的，我不会CSS3，别跟我整那些幺蛾子。
当然有！！！
// projects.html// bootstrap库帮你写好了，填写class就好 <tr *ngFor="let project of projects" class="animated fadeInRight">// projects.html// bootstrap库帮你写好了，填写class就好 <tr *ngFor="let project of projects" class="animated fadeInRight">
以上所述是小编给大家介绍的Angular2搜索和重置按钮过场动画，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对武林网网站的支持！
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