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Angular2搜索和重置按钮过场动画

时间：2020-05-01 23:52 编辑：来源：阅读：
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摘要：Angular2搜索和重置按钮过场动画

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.ts
import {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.ts
import {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 [img]http://files.jb51.net/file_images/article/201705/201752490144144.png?2017424926[/img] // 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.ts
styleUrls: ['./projects.css', '../animation.css']
//projects.html
<tr *ngFor="let project of projects" class="fadeIn">
//projects.component.ts
styleUrls: ['./projects.css', '../animation.css']
//projects.html
<tr *ngFor="let project of projects" class="fadeIn">

实现效果如下 [img]http://files.jb51.net/file_images/article/201705/201752490811128.gif?20174249824[/img] 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编程素材网网站的支持！

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