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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

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Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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Using packages here is powered by Skypack, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ES6 import usage.

All packages are different, so refer to their docs for how they work.

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HTML 

              
                
<body class="antialiased sans-serif bg-gray-100 flex w-full items-center min-h-screen">
	<div class="max-w-6xl mx-auto pt-4 pb-8 px-4 overflow-hidden w-full">
		<div x-data="{ loading: false, showAlertMessage: false, showSuccessMessage: false, name: '', email: '', errors: [] }"
			x-cloak>
			<div class="md:flex md:flex-wrap">
				<div class="md:w-1/3 md:mx-auto">
					<div class="rounded bg-white shadow p-6 border-t-8 border-blue-500">
						<h1 class="text-2xl text-gray-800 mb-1 font-bold leading-tight">Subscribe our Newsletter</h1>
						<p class="text-gray-600 mb-4 text-sm">Get latest news delivered to your inbox!</p>

						<div x-show="showAlertMessage" x-transition:enter="transition ease-out duration-300"
							x-transition:enter-start="opacity-0 transform scale-90"
							x-transition:enter-end="opacity-100 transform scale-100"
							x-transition:leave="transition ease-in duration-300"
							x-transition:leave-start="opacity-100 transform scale-100"
							x-transition:leave-end="opacity-0 transform scale-90">
							<div class="bg-orange-100 border-l-4 border-orange-500 text-orange-700 p-4 my-4"
								role="alert">
								<p>Please fix the error given below!</p>
							</div>
						</div>

						<div x-show="showSuccessMessage" x-transition:enter="transition ease-out duration-300"
							x-transition:enter-start="opacity-0 transform scale-90"
							x-transition:enter-end="opacity-100 transform scale-100"
							x-transition:leave="transition ease-in duration-300"
							x-transition:leave-start="opacity-100 transform scale-100"
							x-transition:leave-end="opacity-0 transform scale-90">
							<div class="bg-green-100 border-l-4 border-green-500 text-green-700 p-4 my-4"
								role="success">
								<p>Thank you for subscribing!</p>
							</div>
						</div>

						<form method="POST" x-on:submit.prevent="loading=true; 
							if (name == '' && email == '') {
								errors = {
									name: ['The name field is required'],
									email: ['The email field is required']
								}

								loading = false;
								showAlertMessage = true;
								return;
							}

							if (name && email == '') {
								errors = {
									email: ['The email field is required']
								}

								loading = false;
								showAlertMessage = true;
								return;
							}

							if (name == '' && email) {
								errors = {
									name: ['The name field is required']
								}

								loading = false;
								showAlertMessage = true;
								return;
							}

							const expression = /^[^\[email protected]][email protected][^\[email protected]]+\.[^\[email protected]]+$/
                            const validEmail = expression.test(String(email).toLowerCase())

							if (email != '' && ! validEmail) {
								errors = {
									email: ['Please enter a valid email address']
								}

								loading = false;
								showAlertMessage = true;
								return;
							}
							
							// Replace this with your own Sheety API
							fetch('https://v2-api.sheety.co/8ab38e8355f6f144fb93048354178f03/subscribersApi/subscribers', {
								method: 'POST',
								headers: {
									'Content-Type': 'application/json'
								},
								body: JSON.stringify({
									subscriber: {
										name: name,
										email: email
									}
								})
							}).then(response => response.json())
								.then(data => {
									loading = false;
									showAlertMessage = false;
									showSuccessMessage = true;
									name = '';
									email = '';
								});
						">

							<div class="mb-4">
								<label for="name" class="font-bold mb-1 block text-gray-700">Name</label>
								<div class="relative">
									<input id="name" x-model="name" x-on:keydown="delete errors['name']"
										x-bind:class="{ 'border-red-500 text-red-500': errors['name'] }"
										class="bg-white focus:outline-none focus:shadow-outline border border-gray-300 rounded-lg py-2 px-4 block w-full appearance-none leading-normal"
										type="text" placeholder="Jane Doe">

									<template x-if="errors['name']">
										<span>
											<svg class="w-6 h-6 absolute text-red-600 fill-current"
												style="top: 10px; right: 12px" xmlns="http://www.w3.org/2000/svg"
												viewBox="0 0 24 24">
												<path
													d="M11.953,2C6.465,2,2,6.486,2,12s4.486,10,10,10s10-4.486,10-10S17.493,2,11.953,2z M13,17h-2v-2h2V17z M13,13h-2V7h2V13z" />
											</svg>
											<span class="text-red-600 mt-2 text-sm block"
												x-text="errors['name']"></span>
										</span>
									</template>
								</div>

							</div>

							<div class="mb-5">
								<label for="email" class="font-bold mb-1 block text-gray-700">Email</label>
								<div class="relative">
									<input id="email" x-model="email" x-on:keydown="delete errors['email']"
										x-bind:class="{ 'border-red-500 text-red-500': errors['email'] }"
										class="bg-white focus:outline-none focus:shadow-outline border border-gray-300 rounded-lg py-2 px-4 block w-full appearance-none leading-normal"
										type="text" placeholder="[email protected]">

									<template x-if="errors['email']">
										<span>
											<svg class="w-6 h-6 absolute text-red-600 fill-current"
												style="top: 10px; right: 12px" xmlns="http://www.w3.org/2000/svg"
												viewBox="0 0 24 24">
												<path
													d="M11.953,2C6.465,2,2,6.486,2,12s4.486,10,10,10s10-4.486,10-10S17.493,2,11.953,2z M13,17h-2v-2h2V17z M13,13h-2V7h2V13z" />
											</svg>
											<span class="text-red-600 mt-2 text-sm block"
												x-text="errors['email']"></span>
										</span>
									</template>
								</div>
							</div>

							<button type="submit"
								class="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded-lg w-full"
								x-bind:disabled="loading == true">
								<template x-if="loading == false">
									<div>Subscribe Now!</div>
								</template>
								<template x-if="loading == true">
									<div>Subscribing...</div>
								</template>
							</button>

						</form>

					</div>
				</div>
			</div>
		</div>
	</div>
</body>
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