JSFiddle - React, Tailwind, and code Playground

HTML

<svg width=400px heigth=400px>
    <rect ry=0 rx=0 x=100 y=100 width=50 height=50 fill="blue" id=rect>
		<animateTransform 
			attributeType="xml"
			attributeName="transform"
			type="rotate"
			from="0 125 125"
			to="360 125 125"
			dur="2"
			repeatCount="indefinite" 
		/>
	</rect>
</svg>
<input type=number id=input_number name=input_number />

JavaScript

//obter valor da input
var x = document.getElementById("input_number").value;