Here's an example of an array that for some reason (bug?) that doesn't validate.

[coderextreme]

var fs = require('fs');
var jjv = require('jjv');

var X3dJsonSchema = {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "JSON Schema X3D V3.3",
"description": "Development JSON Schema for X3D V3.3 ",
"type": "object",
"properties": {
"Extrusion": {
"type": "object",
"properties": {
"@crossSection": {
"type": "array",
"minItems": 4,
"items": [
{
"type": "number",
"default": 1
},
{
"type": "number",
"default": 1
},
{
"type": "number",
"default": 1
},
{
"type": "number",
"default": -1
},
{
"type": "number",
"default": -1
},
{
"type": "number",
"default": -1
},
{
"type": "number",
"default": -1
},
{
"type": "number",
"default": 1
},
{
"type": "number",
"default": 1
}
],
"additionalItems": {
"type": "number",
"default": 1
}
}
},
"additionalProperties": false
}
}
};

var env = jjv();
env.addSchema('x3djson', X3dJsonSchema);

function validateJSON() {
try {
var hello = { "Extrusion":
{
"@crossSection":[0,0,0.3,0,0.3,0.3,0,0.3]
}
};

    var errors = env.validate('x3djson', hello);

    if (!errors) {
        console.log('jjv Valid');
    } else {
        console.log('jjv Validation failed.');
        console.log('jjv Validation errors:');
        console.log(JSON.stringify(errors));
    }
} catch (e) {
    console.log('Failed JSON parse');
}

}

validateJSON();