这是有效的Javascript对象吗？

Question

Is this a valid javascript object?

var sections = 
{
    { name: 'SERVER', isKeyValuePair: true },
    { name: 'TYPES', isKeyValuePair: false },
    { name: 'USERS', isKeyValuePair: false }
};

How would I access this?

I will know the name ('SERVER' etc) and will want to get the true or false value for the isKeyValuePair property.

Is there a better layout for this object whereby I can still access the keyvaluepair property based on a search of the name?

Thanks a lot

Joe

Answer 1

Is this a valid javascript object?

No. Inside an object literal you need to have key: value pairs.

Is there a better layout for this object whereby I can still access the keyvaluepair property based on a search of the name?

This would be valid:

var sections = 
[
    { name: 'SERVER', isKeyValuePair: true },
    { name: 'TYPES', isKeyValuePair: false },
    { name: 'USERS', isKeyValuePair: false }
];

In which case you could loop over the array until you found the entry you wanted.

You'd probably want to express it in this way through:

var sections = 
{
    SERVER: true,
    TYPES: false,
    USERS: false
};

Then you would just sections.SERVER or sections['SERVER'] (and thus also var section = "SERVER"; sections[section]; since you might have the key name in a variable)

Answer 2

No, it isn't. You should suplly the inner objects with keys, or us an array of objects:

// key-value pairs
var sections = 
{
    o1: { name: 'SERVER', isKeyValuePair: true },
    o2: { name: 'TYPES', isKeyValuePair: false },
    o3: { name: 'USERS', isKeyValuePair: false }
};
console.log(sections.o1.name); //=> 'SERVER'

// array
var sections = 
[
    { name: 'SERVER', isKeyValuePair: true },
    { name: 'TYPES', isKeyValuePair: false },
    { name: 'USERS', isKeyValuePair: false }
];
console.log(sections[0].name); //=> 'SERVER'

Answer 3

This is not valid.

You can use either

var sections = 
{
    s1: { name: 'SERVER', isKeyValuePair: true },
    s2: { name: 'TYPES', isKeyValuePair: false },
    s3: { name: 'USERS', isKeyValuePair: false }
};

and acces as sections.s1 , ...

or

var sections = 
[
    { name: 'SERVER', isKeyValuePair: true },
    { name: 'TYPES', isKeyValuePair: false },
    { name: 'USERS', isKeyValuePair: false }
];

and sections[0] , ...

Answer 4

No, it isn't a valid object.If it was structured like this:

var sections = {
    prop11: { name: 'SERVER', isKeyValuePair: true },
    prop2: { name: 'TYPES', isKeyValuePair: false },
    prop3: { name: 'USERS', isKeyValuePair: false }
};

It would be correct. However it looks like what you really want is an array. Try using the following:

var sections = 
[
    { name: 'SERVER', isKeyValuePair: true },
    { name: 'TYPES', isKeyValuePair: false },
    { name: 'USERS', isKeyValuePair: false }
];