I am trying to add values to an array if checkbox is checked and remove if it isn't. Following is my HTML code:
<div *ngFor="let item of checkListFilter">
{{item.name}}
</div>
<input type="checkbox" id="test" (click)="pushCheckBoxValue(this.id)">
Typescript code:
checkListFilter = [
{ id: 1, name: "ABC" },
{ id: 2, name: "XYZ" },
{ id: 3, name: "DEF" },
]
pushCheckBoxValue(value: any) {
this.checkListFilter.push(value)
}
To have checkbox for each element you have to re-organize your html like this
<div *ngFor="let item of checkListFilter">
{{ item.name }}
<input type="checkbox" id="test" (click)="pushCheckBoxValue(item)" />
</div>
With this aproach your code will work, but you will have duplicated values inside your checkListFilter array.
Your optimal solution would be to use Reactive Forms like answered here: https://stackoverflow.com/a/40937827/12677894
Typescript code:
checkListFilter = [
{ id: 1, name: "ABC",isChecked:false },
{ id: 2, name: "XYZ",isChecked:false },
{ id: 3, name: "DEF",isChecked:false },
]
get checkedIds(){
let ids =[];
let checkListFilter = this.checkListFilter;
ids = checkListFilter.filter(item=>isChecked).map(item=>item.id);
}
Html:
<div *ngFor="let item of checkListFilter">
{{item.name}}
<input type="checkbox" id="test"
[(ngModel)]="item.isChecked"
>
</div>
For each change checkedIds will be changed: console.log(this.checkedIds)// [1,2]........
<input type="checkbox" />