是的，angular2中有on-mouseover，而不是angular 1中的ng-Mouseover。所以你必须这样写:-

<div on-mouseover='over()' style="height:100px; width:100px; background:#e2e2e2">hello mouseover</div>

over(){
    console.log("Mouseover called");
  }

正如@Gunter在评论中建议的那样，我们也可以使用on-mouseover。有些人更喜欢带前缀的替代形式，称为规范形式。

更新

HTML代码-

<div (mouseover)='over()' (mouseout)='out()' style="height:100px; width:100px; background:#e2e2e2">hello mouseover</div>

控制器/。TS代码-

import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: [ './app.component.css' ]
})
export class AppComponent  {
  name = 'Angular';

  over(){
    console.log("Mouseover called");
  }

  out(){
    console.log("Mouseout called");
  }
}

工作示例

其他一些鼠标事件也可以在Angular中使用

(mouseenter)="myMethod()"
(mousedown)="myMethod()"
(mouseup)="myMethod()"

你可以用一个主机:

import { Directive, ElementRef, Input } from '@angular/core';

@Directive({
  selector: '[myHighlight]',
  host: {
    '(mouseenter)': 'onMouseEnter()',
    '(mouseleave)': 'onMouseLeave()'
  }
})
export class HighlightDirective {
  private _defaultColor = 'blue';
  private el: HTMLElement;

  constructor(el: ElementRef) { this.el = el.nativeElement; }

  @Input('myHighlight') highlightColor: string;

  onMouseEnter() { this.highlight(this.highlightColor || this._defaultColor); }
  onMouseLeave() { this.highlight(null); }

   private highlight(color:string) {
    this.el.style.backgroundColor = color;
  }

}

只需调整它到你的代码(在:https://angular.io/docs/ts/latest/guide/attribute-directives.html)

如果您想在任何HTML元素上执行类似悬停的事件，那么您可以这样做。

HTML

 <div (mouseenter) ="mouseEnter('div a') "  (mouseleave) ="mouseLeave('div A')">
        <h2>Div A</h2>
 </div> 
 <div (mouseenter) ="mouseEnter('div b')"  (mouseleave) ="mouseLeave('div B')">
        <h2>Div B</h2>
 </div>

组件

import { Component } from '@angular/core';

@Component({
    moduleId: module.id,
    selector: 'basic-detail',
    templateUrl: 'basic.component.html',
})
export class BasicComponent{

   mouseEnter(div : string){
      console.log("mouse enter : " + div);
   }

   mouseLeave(div : string){
     console.log('mouse leave :' + div);
   }
}

你应该同时使用mouseenter和mouseleave事件，以便在angular 2中完全实现功能性的悬停事件。

对于在overing上处理事件，您可以尝试这样做 (这对我很管用):

在Html模板中:

<div (mouseenter)="onHovering($event)" (mouseleave)="onUnovering($event)">
  <img src="../../../contents/ctm-icons/alarm.svg" class="centering-me" alt="Alerts" />
</div>

在角分量中:

    onHovering(eventObject) {
    console.log("AlertsBtnComponent.onHovering:");
    var regExp = new RegExp(".svg" + "$");

    var srcObj = eventObject.target.offsetParent.children["0"];
    if (srcObj.tagName == "IMG") {
        srcObj.setAttribute("src", srcObj.getAttribute("src").replace(regExp, "_h.svg"));       
    }

   }
   onUnovering(eventObject) {
    console.log("AlertsBtnComponent.onUnovering:");
    var regExp = new RegExp("_h.svg" + "$");

    var srcObj = eventObject.target.offsetParent.children["0"];
    if (srcObj.tagName == "IMG") {
        srcObj.setAttribute("src", srcObj.getAttribute("src").replace(regExp, ".svg"));
    }
}

@Component({
    selector: 'drag-drop',
    template: `
        <h1>Drag 'n Drop</h1>
        <div #container 
             class="container"
             (mousemove)="onMouseMove( container)">
            <div #draggable 
                 class="draggable"
                 (mousedown)="onMouseButton( container)"
                 (mouseup)="onMouseButton( container)">
            </div>
        </div>`,

})

http://lishman.io/angular-2-event-binding

在你的js/ts文件的html将被盘旋

@Output() elemHovered: EventEmitter<any> = new EventEmitter<any>();
onHoverEnter(): void {
    this.elemHovered.emit([`The button was entered!`,this.event]);
}

onHoverLeave(): void {
    this.elemHovered.emit([`The button was left!`,this.event])
}

在你的HTML中

 (mouseenter) = "onHoverEnter()" (mouseleave)="onHoverLeave()"

在你的js/ts文件中，将接收到悬停的信息

elemHoveredCatch(d): void {
    console.log(d)
}

在与捕获js/ts文件连接的HTML元素中

(elemHovered) = "elemHoveredCatch($event)"

如果你对鼠标进出某个组件感兴趣，你可以使用@HostListener装饰器:

import { Component, HostListener, OnInit } from '@angular/core';

@Component({
  selector: 'my-component',
  templateUrl: './my-component.html',
  styleUrls: ['./my-component.scss']
})
export class MyComponent implements OnInit {

  @HostListener('mouseenter') 
  onMouseEnter() {
    this.highlight('yellow');
  }

  @HostListener('mouseleave') 
  onMouseLeave() {
    this.highlight(null);
  }

...

}

正如@Brandon评论OP (https://angular.io/docs/ts/latest/guide/attribute-directives.html)中的链接所解释的那样

在Angular2+中简单地做(mouseenter)属性…

在你的HTML中:

<div (mouseenter)="mouseHover($event)">Hover!</div> 

在你的组件中:

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'component',
  templateUrl: './component.html',
  styleUrls: ['./component.scss']
})

export class MyComponent implements OnInit {

  mouseHover(e) {
    console.log('hovered', e);
  }
} 

如果鼠标在整个组件上是你的选项，你可以直接是@hostListener来处理事件来执行鼠标在下面的al。

  import {HostListener} from '@angular/core';

  @HostListener('mouseenter') onMouseEnter() {
    this.hover = true;
    this.elementRef.nativeElement.addClass = 'edit';
  }

  @HostListener('mouseleave') onMouseLeave() {
    this.hover = false;
    this.elementRef.nativeElement.addClass = 'un-edit';
  }

它在@angular/core中可用。我在angular 4.x.x中测试了它

如果你只是想要一个悬停效果，请使用hover .css。

NPM我盘旋。css 在文件angular中。Json属性projects.architect.build.options.styles——>添加这一行到数组:node_modules/hover.css/scss/hover.scss

在你想要效果的元素上使用它们的任何类，即:

<div *ngFor="let source of sources">
    <div class="row justify-content-center">
        <div class="col-12 hvr-glow">
            <!-- My content -->
        </div>
    </div>
</div>