Add param to all objects in an Array - Javascript -

i have array of objects like:

[    {       title: 'title 1',       value: 'value 1'    },    {       title: 'title 2',       value: 'value 2'    } ] 

i need add new param objects.

i know can on array , modify each object, i'm trying find way solve native method. exists?

var arrayobj=[     {        title: 'title 1',        value: 'value 1'     },     {        title: 'title 2',        value: 'value 2'     }  ];    arrayobj.foreach(function(obj){    obj.newprop='new';    });  console.log(arrayobj);