json-math

node-json-math

Package for expressing mathematical operations in JSON. Useful for storing mathematical procedures in a database.

Examples of use

var JSONMath = require('json-math');
var math = new JSONMath();
var result = math.execute({
    "a": {
        "operation": "+",
        "variables": [
            2,
            2
        ]
    },
    "b": {
        "operation": "-",
        "variables": [
            5,
            1
        ]
    },
    "c": {
        "operation": "*",
        "variables": [
            2,
            2
        ]
    },
    "d": {
        "operation": "/",
        "variables": [
            8,
            2
        ]
    }
});

After this has executed, the value of a , b, c and d will be 4.

You can also pass in an array of operations to perform, and even reference variables inside the procedure

[
    {
        "a": 3,
        "b": 4
    },
    {
        "c": {
            "operation": "+",
            "variables": [
                "a",
                "b"
            ]
        }
    },
    {
        "c": "c"
    }
]

After this the value of a will be 3, b will be 4 and c will be 7.