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[英]How to change button text and disable button on click event in angular2
[英]Angular 4 on click event change button text and style
我有一個組件與以下方法
onProductAdded(product: ImportList) { // Add an Item to ImportList
// after some logic add product to ImportList
this.productIsOnImportList = true;
console.log('product added');
}
onProductRemoved(product: ImportList) {
this.productIsOnImportList = false;
console.log('product removed');
}
在我的html模板上
<button
(click)="onProductAdded(product)"
*ngIf="!productIsOnImportList"
class="ui labeled icon blue button">
<i class="plus icon"></i>
Add to Import List
</button>
<button
(click)="onProductRemoved(product)"
*ngIf="productIsOnImportList"
class="ui labeled icon red button">
<i class="minus icon"></i>
Remove
</button>
問題是現在行為是全局的,點擊會影響所有產品,但我希望點擊對個別產品是私有的。 我怎樣才能做到這一點?
您可以簡單地使用$event
來實現此目的,而不是使用兩個單獨的按鈕
onProductAdded(event){
if(event.srcElement.innerHTML ==='Add to Import List' ){
//// perform add action
event.srcElement.innerHTML="Remove";
} else if(event.srcElement.innerHTML ==='Remove'){
//// perform remove action
event.srcElement.innerHTML="Add to Import List";
}
}
HTML
<button (click)="onProductAdded($event)">Add to Import List</button>
更新1:基於font-awesome圖標的評論
onProductAdded(event){
if(event.srcElement.childNodes[1].textContent === 'Add to Import List' ){
//// perform add action
event.srcElement.childNodes[0].classList.remove('fa-plus');
event.srcElement.childNodes[0].classList.add('fa-times');
event.srcElement.childNodes[1].textContent="Remove";
} else if(event.srcElement.innerText ==='Remove'){
//// perform remove action
event.srcElement.childNodes[0].classList.add('fa-plus');
event.srcElement.childNodes[0].classList.remove('fa-times');
event.srcElement.childNodes[1].textContent="Add to Import List";
}
}
注意:現場演示也會更新。
我通過向模型類添加一個布爾變量來解決它。
export interface ImportList {
id: number;
added?: boolean;
}
然后在組件類我改變了方法
onProductAdded(product: ImportList) { // Add an Item to ImportList
// after some logic add product to ImportList
//this.importList.push(product);
product.added = true;
console.log('product added');
}
onProductRemoved(product: ImportList) {
product.added = false;
console.log('product removed');
}
在模板中我做到了這一點。
<button
(click)="onProductAdded(product)"
*ngIf="!product.added"
class="ui labeled icon blue button">
<i class="plus icon"></i>
Add to Import List
</button>
<button
(click)="onProductRemoved(product)"
*ngIf="product.added"
class="ui labeled icon red button">
<i class="minus icon"></i>
Remove
</button>
通過這樣做,我能夠聽取單個產品的點擊。 我希望這可以幫助別人。
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