var arr= [
{
characteristics: {first: 1, second: 2 },
page: 2,
price_max: 10,
price_min = 1
},
{
characteristics: {first: 1, second: 2 },
page: 2,
price_max: 10,
price_min = 1
}
];
arr.forEach(function(element,i,arr) {
element.page += 1;
};