1 <div class= "editor" > 2 <div class= "editor-header" > SVG Code Editor </div> 3 <textarea 4 id= "svgInput" 5 placeholder= "Paste your SVG code here and watch the magic happen..." 6 ></textarea> 7 </div>The preview area will have a preview container where the current SVG code will be injected for preview. 1 <div class= "preview" > 2 <div class= "preview-header" > SVG Preview </div> 3 <div class= "preview-content" > 4 <div id= "previewContainer" class= "preview-container" ></div> 5 </div> 6 </div>HTML MarkupOkay, let’s start with the building blocks. getElementById ( " exportBtn " );SVG Code ValidationThe next step is to ensure that the SVG code is valid before adding it for preview. trim ()) { 4 showErrorMessage ( " Enter SVG code to see preview " ); 5 return ; 6 }}The second form of validation will be done using the DOMParser to ensure the SVG Code is well formatted XML code. Here’s a reminder of the final codepen demo:We built a fully functional SVG viewer using HTML, CSS, and JavaScript.