HTML in one line

by Felipe Alfaro

HTML

<section>
    <textarea id="content"></textarea>
    <input id="oneline" readonly/>
    <div id="preview"></div>
</section>

CSS

html, body {
    margin: 0;
}

section {
    margin: 15px;
}

textarea,
input,
button {
    display: block;
    width: 100%;
    box-sizing: border-box;
    font-family: monospace;
    font-size: 16px;
    color: #848484;
    margin: 15px 0;
}

textarea {
    min-height: 300px;
    padding: 15px;
}

input {
    height: 30px;
    padding: 0 15px;
}

button {
    cursor: pointer;
    padding: 10px 15px;
}

#preview {
    font-family: Arial;
    font-size: 14px;
}

JavaScript

document.addEventListener('DOMContentLoaded', () => {
    const contentElement = document.getElementById('content');
  	const oneLineElement = document.getElementById('oneline');
    const copyButtonElement = document.getElementById('copybutton');
    const previewElement = document.getElementById('preview');
  
    contentElement.oninput = () => {
        oneLineElement.value = contentElement.value.replace(/[\r\n]/gm, '');;
        previewElement.innerHTML = contentElement.value;
    };
});