For example, when I start, I want my program to load all previously stored messages into a JSON (message.json) file.
ngOnInit() {
this.emissor = 'Victor';
this._http.get<PreparacaoDeMensagem[]>("../assets/db/mensagem.json")
.subscribe(mensagem => {
this.mensagem = mensagem
//console.log('o valor é ', this.mensagem);
this.adicionarMensagem(this.mensagem);
})
}
Use for , this way you make sure that all items in your file are read:
for (let i = 0; i < mensagem.length; i++) {
this.adicionarMensagem(this.mensagem[i]);
}
.length will be what will for get the full size of your file and read through.
If you want something different you could use the .forEach array method
It would look like this
this.mensagem = mensagem
this.mensagem.forEach(men => {
this.adicionarMensagem(men);
});
This method will go through the entire array and execute the method for each element of the array.