Record set

Keywords: 
Data objects
JSON
Situation: 

You want to store a bunch of records in JS. Each record has the same fields.

Actions: 

Use a record set. Make a JS array. Each element is a JS object, with the same properties.

Explanation: 

Here is an example:

var catalog = [
    {
        id: 42,
        title: "Web apps for happy dogs",
        maxEnrollment: 40,
        location: "Monty Hall 301"
    },
    {
        id: 155,
        title: "Databases for happy dogs",
        maxEnrollment: 32,
        location: "Monty Hall 301"
    },
    ....
];

catalog is a JS array. Each element is an object. Each object has the same properties: id, title, maxEnrollment, and location.

Referenced in: 
Course catalog: many courses