⚡️ zapfilter

Batch filter JSON data.

Code by @interstellarjay ❤️

Why use Zapfilter?

• It's tiny < 20KB
• No dependencies
• Open source!
• Easily apply multiple filters - works with any JS framework.
• Prebuilt date, number, string and boolean filter functions.
• 100% extensible (create your own filter functions).

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How do I use zapfilter?

1 Install the module from npm

npm i zapfilter

2 Create a new zapfilter instance

const zapfilter = require("zapfilter"); // import zapfilter from "zapfilter"
const zf = new zapfilter();

3 Fetch your JSON data

const data = [
    {
        name: "Nintendo® Switch",
        price: 289.99,
        currency: "EUR",
        age: 2
    },
    {
        name: "PlayStation® 4",
        price: 229.99
        currency: "EUR",
        age: 6
    },
    {
        name: "PS4® Pro",
        price: 319.99,
        currency: "EUR",
        age: 3
    }
]

4 Filter Filters must be written in the format:

• filter filterfunction,
• onProperty: name of key in data object,
• value: the value you want to check against

const filters = [
    {
        filter: zf.filterEqualTo,
        onProperty: "age",
        value: 3,
    },
    {
        filter: zf.filterGreaterThan,
        onProperty: "price",
        value: 250.00,
    }
];
zf.setFilters(filters);
zf.filter(data);
zf.clearFilters();

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API - core functions

✋ By default "-", and "_", and " " are escaped from strings. And matches are case insensitive.

zf.setFilters(filters)

• Registers all the filters to be used before the data is filtered.

zf.filter(data)

• Filters the data if any conditions match.

zf.removeDuplicates()

• Manually remove any duplicated objects in the result.

zf.clearFilters()

• Removes all the applied filters, your data will now be unfiltered.

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API - prebuilt filtering functions

zf.filterLessThan

• Filter everything less than the specified number.

zf.filterGreaterThan

• Filter everything greater than the specified number.

zf.filterEqualTo

• Filter everything EXACTLY equal to the specified number, boolean, or string.

zf.filterPartialMatch

• Filter everything which partially contains the specified string specified.

zf.filterNotEqualTo

• Filter everything NOT equal to the specified number, boolean, or string.

zf.filterBeforeDate (Dates written in the format "YYYY-MM-DD").

• Filter everything before the specified date

zf.filterBeforeDate (Dates written in the format "YYYY-MM-DD").

• Filter everything after the specified date

zf.filterEqualToDate (Dates written in the format "YYYY-MM-DD").

• Filter everything equal to the specified date

zf.filterNotEqualToDate (Dates written in the format "YYYY-MM-DD").

• Filter everything not equal to the specified date

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Where would I use this?

Filter your data set by name, release date, rating, color, price, age, condition... anything you like!

Why create zapfilter?

zapfilter was created because I felt like the process of applying multiple filters on JSON needed to be simpler.

Enjoying zapfilter?

If you're enjoying zapfilter and would like to support the project, please consider sponsoring the package.

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