Javascript 如何从JSON-2查找数组中对象的索引
如何从组件中的JSON查找数组中对象的索引 我的JSON文件如下所示Javascript 如何从JSON-2查找数组中对象的索引,javascript,angular,indexof,Javascript,Angular,Indexof,如何从组件中的JSON查找数组中对象的索引 我的JSON文件如下所示 { "Projects":[ { "id":"proj-1", "name":"Design for creative", "meta":{ "date":"03 November, 2016", "url":"http://www.pixelsocket.com", }, { "id":"proj-2", "name":"Desig
{
"Projects":[
{
"id":"proj-1",
"name":"Design for creative",
"meta":{
"date":"03 November, 2016",
"url":"http://www.pixelsocket.com",
},
{
"id":"proj-2",
"name":"Design for creative",
"meta":{
"date":"03 November, 2016",
"url":"http://www.pixelsocket.com",
}
...
}
这是我的项目详细信息组件
export class ProjectDetailComponent implements OnInit{
project: Project;
projectId: string;
totalProjects: Project[] = [];
currentProjectIndex:number;
constructor(private dataService: DataService, private route: ActivatedRoute) {
this.projectId = route.snapshot.params['id'];
}
ngOnInit() {
//Getting Projects Data
this.dataService.getProjects().then(
(data: any) => this.totalProjects = data
);
this.route.params
.switchMap((params: Params) => this.dataService.getProject(this.projectId))
.subscribe(data => this.project = data);
}
}
现在我想以某种方式获取对象的当前索引。该方法返回数组中满足提供的测试函数的第一个元素的索引
函数足够大(元素){
返回元素>=15;
}
[12,5,8130,44].findIndex(足够大);//3.
给我们看一些代码。您的JSON,任何内容。可能与