remove item from stored array in angular 2

I want to remove an item from a stored array in angular 2, with Type Script. I am using a service called Data Service, the DataService Code:

export class DataService {

    private data: string[] = [];

    addData(msg: string) {
        this.data.push(msg);
    }

    getData() {
        return this.data;
    }

    deleteMsg(msg: string) {
        delete [this.data.indexOf(msg)];
    }
}

And my component class:

import {Component} from '@angular/core'
import {LogService} from './log.service'
import {DataService} from './data.service'

@Component({
    selector: 'tests',
    template:
            `
        
            Testing Component
            
                
                log
                store
                send
                Show Storage
                log array
            
            
                
                    
                        {{item}}
                        Delete
                        
                    
                
            
            {{value}}
            
        
    `
})

export class TestsComponent {

    items: string[] = [];

    constructor(
        private logService: LogService,
        private dataService: DataService) {

    }

    logM(message: string) {
        this.logService.WriteToLog(message);
    }

    store(message: string) {
        this.dataService.addData(message);
    }

    send(message: string) {
    }

    show() {
        this.items = this.dataService.getData();
    }

    deleteItem(message: string) {
        this.dataService.deleteMsg(message);
    }

    logarray() {
        this.logService.WriteToLog(this.items.toString());
    }
}

Now, everything is working good except when I try to delete an item. The log shows me that the item is still in the array, and therefore is still shown on the page. How can I remove the item after selecting it with the delete button??

You can't use delete to remove an item from an array. This is only used to remove a property from an object.

You should use splice to remove an element from an array:

deleteMsg(msg:string) {
    const index: number = this.data.indexOf(msg);
    if (index !== -1) {
        this.data.splice(index, 1);
    }        
}

Stack Overflow Q#40462369, score: 295