角度2不能调用函数内部函数它说它不是一个函数

我在component.ts上有角度2客户端我创建了一个ngOnInit

ngOnInit(){

        var grid = document.getElementById('devpro');
        grid.addEventListener('selected-items-changed', function() {

                var selected = grid.selection.selected();
                if (selected.length == 1) {

                    this.detailproject = [];
                    var prodetails = grid.items[grid.selection.selected()].ProjectName;
                    console.log(prodetails);
                    this.getdetailsproject(prodetails);   <<<<<< this part
                    var detailsproject :any = document.getElementById('detailsproject');
                        if (detailsproject) {
                            detailsproject.open();
                        }
                }
        });
    }


getdetailsproject(prodetails){ <<< this is my function
        this._httpprovider.httpReq('http://localhost:5000/getdetailsproject','POST',{ProjectName:prodetails},null).subscribe((data)=>{ 
                    var dprodetails = [];
                    for (let i=0;i

我尝试在里面调用它,没有任何结果只是一个错误说我的getdetailsproject不是一个函数

有没有办法像平时那样称呼它？


1> Volodymyr Bi..：
在类型脚本中使用 

grid.addEventListener('selected-items-changed', () => { })


代替  

grid.addEventListener('selected-items-changed', function() { });