我希望div使用css从角度2向右滑入。
<div class="note" [ngClass]="{'transition':show}" *ngIf="show">
<p> Notes</p>
</div>
<button class="btn btn-default" (click)="toggle(show)">Toggle</button>
如果我只使用[ngClass]切换类并使用不透明度,我的工作正常。 但李不希望从一开始就渲染这个元素,所以我先用ngIf“隐藏”它,但转换不会起作用。
.transition{
-webkit-transition: opacity 1000ms ease-in-out,margin-left 500ms ease-in-out;
-moz-transition: opacity 1000ms ease-in-out,margin-left 500ms ease-in-out;
-ms-transition: opacity 1000ms ease-in-out,margin-left 500ms ease-in-out ;
-o-transition: opacity 1000ms ease-in-out,margin-left 500ms ease-in-out;
transition: opacity 1000ms ease-in-out,margin-left 500ms ease-in-out;
margin-left: 1500px;
width: 200px;
opacity: 0;
}
.transition{
opacity: 100;
margin-left: 0;
}
答案 0 :(得分:166)
更新4.1.0
另见https://github.com/angular/angular/blob/master/CHANGELOG.md#400-rc1-2017-02-24
更新2.1.0
有关详细信息,请参阅Animations at angular.io
import { trigger, style, animate, transition } from '@angular/animations';
@Component({
selector: 'my-app',
animations: [
trigger(
'enterAnimation', [
transition(':enter', [
style({transform: 'translateX(100%)', opacity: 0}),
animate('500ms', style({transform: 'translateX(0)', opacity: 1}))
]),
transition(':leave', [
style({transform: 'translateX(0)', opacity: 1}),
animate('500ms', style({transform: 'translateX(100%)', opacity: 0}))
])
]
)
],
template: `
<button (click)="show = !show">toggle show ({{show}})</button>
<div *ngIf="show" [@enterAnimation]>xxx</div>
`
})
export class App {
show:boolean = false;
}
<强>原始强>
当表达式变为*ngIf
时, false
会从DOM中删除该元素。您不能在不存在的元素上进行转换。
改为使用hidden
:
<div class="note" [ngClass]="{'transition':show}" [hidden]="!show">
答案 1 :(得分:111)
根据最新的angular 2 documentation ,您可以制作动画&#34;进入和退出&#34;元素(如角度1)。
简单淡入淡出动画示例:
在相关的@Component中添加:
animations: [
trigger('fadeInOut', [
transition(':enter', [ // :enter is alias to 'void => *'
style({opacity:0}),
animate(500, style({opacity:1}))
]),
transition(':leave', [ // :leave is alias to '* => void'
animate(500, style({opacity:0}))
])
])
]
不要忘记添加导入
import {style, state, animate, transition, trigger} from '@angular/animations';
相关组件的html元素应如下所示:
<div *ngIf="toggle" [@fadeInOut]>element</div>
我构建了幻灯片和淡入淡出动画的示例 here。
解释 on&#39; void&#39;和&#39; *&#39;:
void
是ngIf
设置为false时的状态(适用于。{
元素未附加到视图上。)*
- 可以有许多动画状态(在文档中阅读更多内容)。 *
状态优先于所有状态作为&#34;通配符&#34; (在我的示例中,这是ngIf
设置为true
时的状态。)注意(取自角文档):
额外在app模块中声明,
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
角度动画构建于标准Web动画API之上 并在支持它的浏览器上本机运行。对于其他浏览器,a polyfill是必需的。从GitHub获取web-animations.min.js并添加 它到你的页面。
答案 2 :(得分:14)
trigger('slideIn', [
state('*', style({ 'overflow-y': 'hidden' })),
state('void', style({ 'overflow-y': 'hidden' })),
transition('* => void', [
style({ height: '*' }),
animate(250, style({ height: 0 }))
]),
transition('void => *', [
style({ height: '0' }),
animate(250, style({ height: '*' }))
])
答案 3 :(得分:9)
现代浏览器的CSS唯一解决方案
@keyframes slidein {
0% {margin-left:1500px;}
100% {margin-left:0px;}
}
.note {
animation-name: slidein;
animation-duration: .9s;
display: block;
}
答案 4 :(得分:3)
我使用angular 5和ngif为我工作,我必须使用animateChild,在用户详细信息组件中,我使用了* ngIf =&#34; user.expanded&#34;显示隐藏用户并且它可用于输入
<div *ngFor="let user of users" @flyInParent>
<ly-user-detail [user]= "user" @flyIn></user-detail>
</div>
//the animation file
export const FLIP_TRANSITION = [
trigger('flyInParent', [
transition(':enter, :leave', [
query('@*', animateChild())
])
]),
trigger('flyIn', [
state('void', style({width: '100%', height: '100%'})),
state('*', style({width: '100%', height: '100%'})),
transition(':enter', [
style({
transform: 'translateY(100%)',
position: 'fixed'
}),
animate('0.5s cubic-bezier(0.35, 0, 0.25, 1)', style({transform: 'translateY(0%)'}))
]),
transition(':leave', [
style({
transform: 'translateY(0%)',
position: 'fixed'
}),
animate('0.5s cubic-bezier(0.35, 0, 0.25, 1)', style({transform: 'translateY(100%)'}))
])
])
];
答案 5 :(得分:2)
一种方法是使用setter作为ngIf属性,并将状态设置为更新值的一部分。将属性设置为true时,需要调用detectChanges()以确保在动画状态发生变化之前将元素添加回dom。
<强> example.component.ts 强>
import { Component, AnimationTransitionEvent, OnInit } from '@angular/core';
import { trigger, state, style, animate, transition } from '@angular/animations';
@Component({
selector: 'example',
templateUrl: `./example.component.html`,
styleUrls: [`./example.component.css`],
animations: [
trigger('state', [
state('visible', style({
opacity: '1'
})),
state('hidden', style({
opacity: '0'
})),
transition('* => visible', [
animate('500ms ease-out')
]),
transition('visible => hidden', [
animate('500ms ease-out')
])
])
]
})
export class ExampleComponent implements OnInit {
state: string;
private _showButton: boolean;
get showButton() {
return this._showButton;
}
set showButton(val: boolean) {
if (val) {
this._showButton = true;
this.state = 'visible';
} else {
this.state = 'hidden';
}
}
constructor() {
}
ngOnInit() {
this.showButton = true;
}
animationDone(event: AnimationTransitionEvent) {
if (event.fromState === 'visible' && event.toState === 'hidden') {
this._showButton = false;
}
}
log() {
console.log('clicked');
}
}
<强> example.component.html 强>
<div>
<p>animation state: {{state}}</p>
<p>showButton: {{showButton}}</p>
<button (click)="showButton = !showButton">toggle</button>
</div>
<button class="animation-target" *ngIf="showButton" [@state]="state" (@state.done)="animationDone($event)" (click)="log()" >animation target</button>
<强> example.component.css 强>
.animation-target {
background: orange;
height: 150px;
width: 150px;
cursor: pointer;
opacity: 0;
}
答案 6 :(得分:0)
就我而言,我错误地在错误的组件上声明了动画。
app.component.html
<app-order-details *ngIf="orderDetails" [@fadeInOut] [orderDetails]="orderDetails">
</app-order-details>
需要在(appComponent.ts
)中使用元素的组件上声明动画。我是在OrderDetailsComponent.ts
上声明动画。
希望它能帮助犯同样错误的人