Angular2获得单击元素 id

If you want to have access to the id attribute of the button you can leverage the srcElement property of the event:

import {Component} from 'angular2/core';


@Component({
selector: 'my-app',
template: `
<button (click)="onClick($event)" id="test">Click</button>
`
})
export class AppComponent {
onClick(event) {
var target = event.target || event.srcElement || event.currentTarget;
var idAttr = target.attributes.id;
var value = idAttr.nodeValue;
}
}

See this plunkr: https://plnkr.co/edit/QGdou4?p=preview.

See this question:

• How can I make event.srcElement work in Firefox and what does it mean?

You could just pass a static value (or a variable from *ngFor or whatever)

<button (click)="toggle(1)" class="someclass">
<button (click)="toggle(2)" class="someclass">

do like this simply: (as said in comment here is with example with two methods)

import {Component} from 'angular2/core';


@Component({
selector: 'my-app',
template: `
<button (click)="checkEvent($event,'a')" id="abc" class="def">Display Toastr</button>
<button (click)="checkEvent($event,'b')" id="abc1" class="def1">Display Toastr1</button>
`
})
export class AppComponent {
checkEvent(event, id){
console.log(event, id, event.srcElement.attributes.id);
}
}

demo: http://plnkr.co/edit/5kJaj9D13srJxmod213r?p=preview

Finally found the simplest way:

<button (click)="toggle($event)" class="someclass" id="btn1"></button>
<button (click)="toggle($event)" class="someclass" id="btn2"></button>


toggle(event) {
console.log(event.target.id);
}

For TypeScript users:

    toggle(event: Event): void {
let elementId: string = (event.target as Element).id;
// do something with the id...
}

When your HTMLElement doesn't have an id, name or class to call,

then use

<input type="text" (click)="selectedInput($event)">


selectedInput(event: MouseEvent) {
log(event.srcElement) // HTMInputLElement
}

If you want to have access to the id attribute of the button in angular 6 follow this code

`@Component({
selector: 'my-app',
template: `
<button (click)="clicked($event)" id="myId">Click Me</button>
`
})
export class AppComponent {
clicked(event) {
const target = event.target || event.srcElement || event.currentTarget;
const idAttr = target.attributes.id;
const value = idAttr.nodeValue;
}
}`

your id in the value,

the value of value is myId.

There is no need to pass the entire event (unless you need other aspects of the event than you have stated). In fact, it is not recommended. You can pass the element reference with just a little modification.

import {Component} from 'angular2/core';


@Component({
selector: 'my-app',
template: `
<button #btn1 (click)="toggle(btn1)" class="someclass" id="btn1">Button 1</button>
<button #btn2 (click)="toggle(btn2)" class="someclass" id="btn2">Button 2</button>
`
})
export class AppComponent {
buttonValue: string;


toggle(button) {
this.buttonValue = button.id;
}


}

StackBlitz demo

Technically, you don't need to find the button that was clicked, because you have passed the actual element.

Angular guidance

You can use its interface HTMLButtonElement that inherits from its parent HTMLElement !

This way you will be able to have auto-completion...

<button (click)="toggle($event)" class="someclass otherClass" id="btn1"></button>


toggle(event: MouseEvent) {
const button = event.target as HTMLButtonElement;
console.log(button.id);
console.log(button.className);
}

To see all list of HTMLElement from the World Wide Web Consortium (W3C) documentation

StackBlitz demo

For nested html, use closest

<button (click)="toggle($event)" class="someclass" id="btn1">
<i class="fa fa-user"></i>
</button>


toggle(event) {
(event.target.closest('button') as Element).id;
}

You can retrieve the value of an attribute by its name, enabling you to get the value of a custom attribute such as an attribute from a Directive:

<button (click)="toggle($event)" id="btn1" myCustomAttribute="somevalue"></button>




toggle( event: Event ) {
const eventTarget: Element = event.target as Element;
const elementId: string = eventTarget.id;
const attribVal: string = eventTarget.attributes['myCustomAttribute'].nodeValue;
}

You can also use event.path like below

Html:

<tbody>
<tr *ngFor="let r of rows" id="\{\{r}}">
<td>
<span>
<button (click)="deleteRow($event)" type="button"
class="btn-close"></button>
</span>
</td>
</tr>
</tbody>

ts:

deleteRow(evemt:any){


this.rows.pop()
console.log(evemt.path[3].id);
}

in evemt.path[3].id 3 is which parent's you want to access start from 1 is immediate parent