ROS
HTML
<input type="text" id="keyword" onkeyup="document.getElementById('result').innerHTML = this.value.replace(/[^a-zA-Z0-9]/g, '').toLowerCase();">
<h1 id="result"></h1>
<input type="text" id="keyword" onkeyup="document.getElementById('result').innerHTML = this.value.replace(/[^a-zA-Z0-9]/g, '').toLowerCase();">
<h1 id="result"></h1>