[英]Angular 5 make local variable to global
我有這樣的代碼:
var data = [
{
first_name: "Apurv",
date: "2018-01-22",
is_present: "1",
},
{
first_name: "Lucky",
date: "2018-01-22",
is_present: "0",
},
{
first_name: "Apurv",
date: "2018-01-20",
is_present: "0",
},
{
first_name: "Lucky",
date: "2018-01-20",
is_present: "1",
}
];
var groupByName = {};
data.forEach(function (a) {
groupByName [a.first_name] = groupByName [a.first_name] || [];
groupByName [a.first_name].push({ date: a.date, is_present: a.is_present });
});
console.log(groupByName);
我試圖使groupByName
變量的groupByName
變量成為全局變量,以便與Angular 5上的* ngIf一起使用,是否所有人都可以清除此變量,或者還有其他方法可以解決此問題? 我將在此之前謝謝你!
您應該將其作為組件的屬性:
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-mycomponent',
template: '<some html here>',
})
export class MyComponent implements OnInit{
public data:any[];
public groupByName:any;
ngOnInit() {
this.data = [
{
first_name: "Apurv",
date: "2018-01-22",
is_present: "1",
},
{
first_name: "Lucky",
date: "2018-01-22",
is_present: "0",
},
{
first_name: "Apurv",
date: "2018-01-20",
is_present: "0",
},
{
first_name: "Lucky",
date: "2018-01-20",
is_present: "1",
}
];
this.groupByName = {};
this.data.forEach(function (a) {
this.groupByName[a.first_name] = this.groupByName [a.first_name] || [];
this.groupByName[a.first_name].push({ date: a.date, is_present: a.is_present });
});
}
}
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