Node.js 将 JSON 数据存储在数组中以备后用

Question

I am pretty new working with JSON. I have a for loop like the following that everytime is executed returns a different product (with different owner_id and name fields)

for (/* some condition here */) {
    product = {
         owner_id: somevalue,
         name: somevalue
    }
}

I need to store all the different occurrences of product for a later use. I was thinking about using an array, so I changed the above code to this:

var selectedProducts = [];
for (/* some condition here */) {
    product = {
         owner_id: somevalue,
         name: somevalue
    }
    selectedProducts.push(product);
    selectedProducts.push(JSON.stringify(product));
}

But what I get is an array with undefined content.

What I need to achieve later is calling a for cycle like the following

for(var i = 0; i < selectedProducts.length; i++) {
    console.log(selectedProducts[i]); // Will print the single JSON object
}

How can I achieve such a result?

Answer 1

You could store the selectedProducts array on the session (see docs ).

var selectedProducts = [];
for (/* some condition here */) {
    product = {
         owner_id: somevalue,
         name: somevalue
    }
    selectedProducts.push(product);
}

req.session.selectedProducts = selectedProducts;

Then get the array back from the session.

for(var i = 0; i < req.session.selectedProducts.length; i++) {
    console.log(req.session.selectedProducts[i]); // Will print the single JSON object
}