Typescript / angular2 Push data to start array[0]

Question

I would like to add data to array. But I want to push start always messages[0] , and shouldnt lost messages datas

this.messages.push(data[0]);

Answer 1

you want unshift(). push() adds to the end of an array while unshift adds to the beginning (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift)

this.messages.unshift(data);