DEV Community: Neo Hacker

Why JavaScript Is the Best Programming Language in the World

Neo Hacker — Fri, 29 Aug 2025 07:21:47 +0000

Atwood's Law

"Any application that can be written in JavaScript, will eventually be written in JavaScript." - Jeff Atwood (Co-founder of StackOverflow)

The world runs on JavaScript. Apps, games, servers, websites, even your fridge runs on JavaScript. JavaScript is everywhere. From social media platforms to productivity tools to your IDE. JavaScript is the silent engine driving a vast portion of the software ecosystem.

It is the most used programming language in the world

According to StackOverflow survey, JavaScript has been the most programming language in the world for the last 11 years. JavaScript's ubiquity makes it a lingua franca among developers.

This enduring popularity isn't just a statistical fluke. It's a testament to the language's adaptability, versatility, and vital role in the modern web development landscape.

TypeScript - one of the most loved languages in the world

Yes, TypeScript. When discussing the unparalleled supremacy of JavaScript as the world's best programming language, one cannot overlook its influential companion: TypeScript.

It is one of the most loved programming languages in the world (according to StackOverflow survey). Its emergence has allowed us to create the most complex and large-scale software systems in the world. Being a superset of JavaScript, it has not only complemented but also significantly enhanced the capabilities of its parent language, making a compelling case for JavaScript's unrivaled position.

The largest ecosystem and community in the world

JavaScript's ecosystem, library network, and community are unrivaled in scale and diversity, surpassing those of any other programming language. This extensive ecosystem is not just a collection of tools; it's a vibrant, thriving community that drives innovation and offers unparalleled support for developers.

New libraries and tools are developed and refined at an astonishing rate, ensuring that JavaScript remains at the cutting edge of technology. This dynamic interplay between a comprehensive ecosystem and an active, engaged community solidifies JavaScript's position as the most accessible and progressive programming language in the world.

From NASA's mission control to Tesla cars to Boeing airplanes

NASA's decision to use JavaScript for their mission control software underscores the language's reliability and versatility, proving its capabilities extend far beyond basic web development.

Tesla, at the forefront of electric vehicle innovation, integrates JavaScript into the heart of its cars' infotainment systems.

The International Space Station uses JavaScript for their monitoring systems.

Boeing integrates JavaScript into the flight entertainment systems of their aircraft, allowing passengers to enjoy a rich media experience thousands of feet above the ground.

Universal Compatibility

JavaScript is the only programming language natively supported by all major web browsers, making it the universal language of the web. This ubiquity ensures that JavaScript applications can run anywhere, from the smallest handheld devices to the largest desktop screens, without needing any modifications.

This cross-platform compatibility extends to mobile app development through frameworks like React Native, further cementing JavaScript's position as the most versatile and accessible programming language.

Cutting-Edge Frameworks and Tools

The JavaScript ecosystem is unparalleled in its breadth and depth, with cutting-edge frameworks and tools that are constantly pushing the boundaries of what's possible in web development. From reactive interfaces with React to server-side applications with Node.js, and mobile apps with React Native, JavaScript's toolbox is ever-expanding.

This vibrant ecosystem not only empowers developers to build advanced, feature-rich applications but also ensures they stay at the forefront of technological innovation.

Real-Time Interactivity

JavaScript is the cornerstone of real-time, interactive web applications. With technologies like WebSocket for live data transfer and Service Workers for offline functionality, JavaScript enables the creation of highly interactive and dynamic user experiences.

From live chats and online gaming to collaborative tools and streaming services, JavaScript's capabilities allow developers to meet the growing user demand for instantaneous, always-on services.

Easy learning curve

Accessibility and ease of learning are among JavaScript's most compelling advantages, making it an ideal entry point for newcomers to the world of programming while also ensuring it remains a powerful tool for experienced developers.

JavaScript stands out as an incredibly approachable language for beginners, largely because it requires minimal setup to start coding. Unlike many other programming languages that necessitate a complex development environment, anyone with a basic text editor and a web browser can begin writing and running JavaScript code.

Regle Makes Vue Form Validation Simple and Intuitive

Neo Hacker — Tue, 14 Jan 2025 05:33:26 +0000

Forms have always been a pain to work with in any project. You have to handle the form state, validation, error messages, backend validation and more. Regle is a new Vue form validation library that greatly simplifies working with forms.

What is Regle?

Regle is a new data-driven Vue form validation library similar to Vuelidate. It's inspired by Vuelidate, and if you’ve used that before, Regle will feel very familiar. Since Vuelidate isn't actively maintained anymore, Regle is kind of like its successor. It keeps what worked well in Vuelidate, fixes some issues, and adds cool new features.

Key features of Regle:

Data-driven validation Instead of being tied to components or the DOM, Regle is completely data-driven. This gives you more flexibility to handle validation logic however you want.
Lightweight and fast Regle is super lightweight, even with big forms, it won’t slow your app down.
Async validation Support for async validation, perfect for checking data against servers or APIs.
Extensible You can extend properties and add custom metadata to your validation rules.

Getting Started with Regle

Install Regle:

npm install @regle/core @regle/rules

App.vue:

<template>
    <div class="h-screen bg-white dark:bg-[#191a19] text-gray-900 dark:text-gray-200 p-6">
        <form @submit.prevent="submit" class="max-w-2xl mx-auto">
            <div class="flex flex-col gap-4">
                <!-- Full Name -->
                <div class="flex flex-col gap-2">
                    <label required>Full Name</label>
                    <input v-model="form.fullName" type="text" class="border border-gray-300 dark:border-gray-700 dark:bg-neutral-600 dark:text-gray-200 rounded p-2" />
                    <FieldError :errors="r$.$errors.fullName" />
                </div>
            </div>

            <!-- Children -->
            <h3 class="font-semibold my-4">Children</h3>

            <div v-for="(_, index) in form.children" class="border border-dashed border-gray-600 p-4 rounded-lg mt-4">
                <h3 class="font-semibold uppercase text-xs text-gray-400 mb-3">
                    Child {{ index + 1 }}
                </h3>

                <div class="grid grid-cols-2 gap-x-6 gap-y-4">
                    <!-- Full Name -->
                    <div class="flex flex-col gap-2">
                        <label required>Full Name</label>
                        <input v-model="form.children[index].fullName" type="text" class="border border-gray-300 dark:border-gray-700 dark:bg-neutral-600 dark:text-gray-200 rounded p-2" />
                        <FieldError :errors="r$.$errors.children.$each[index].fullName" />
                    </div>

                    <!-- Age -->
                    <div class="flex flex-col gap-2">
                        <label required>Age</label>
                        <input v-model="form.children[index].age" type="number" class="border border-gray-300 dark:border-gray-700 dark:bg-neutral-600 dark:text-gray-200 rounded p-2" />
                        <FieldError :errors="r$.$errors.children.$each[index].age" />
                    </div>
                </div>
            </div>

            <div class="flex items-center gap-4 mt-4">
                <button type="submit" class="bg-green-800 text-white rounded py-2 px-5 hover:bg-green-900 transition hover:active:bg-green-950">
                    Submit
                </button>
            </div>

            <div v-if="isFormValid" class="mt-4 text-green-600">
                Form is valid!
            </div>
        </form>
    </div>
</template>

<script setup lang="ts">
    import { computed, ref } from 'vue'
    import FieldError from './components/FieldError.vue'
    import { minValue, minLength, required } from '@regle/rules'
    import { useRegle, type RegleComputedRules } from '@regle/core'

    const isFormValid = ref(false)

    const form = ref({
        fullName: '',
        children: [
            { fullName: '', age: 0 },
            { fullName: '', age: 0 }
        ]
    })

    const rules = computed(() => {
        return {
            fullName: {
                required,
                minLength: minLength(10),
            },
            children: {
                $each: {
                    fullName: {
                        required,
                        minLength: minLength(10),
                    },
                    age: {
                        required,
                        minValue: minValue(5),
                    }
                }
            }
        } satisfies RegleComputedRules<typeof form>
    })

    const { r$ } = useRegle(form, rules)

    const submit = async () => {
        isFormValid.value = false

        const { result } = await r$.$validate()

        if (result) {
            isFormValid.value = true
        }
    }
</script>

components/FieldError.vue

<template>
    <ul class="text-sm text-red-400">
        <li v-for="error of props.errors" :key="error" class="field-error">
            * {{ error }}
        </li>
    </ul>
</template>

<script setup lang="ts">
    const props = defineProps<{
        errors: string[]
    }>() 
</script>