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

// 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

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