如何通过NodeJS在线性DOM字符串行中添加缩进？

Question

I've an svg string in fomat like:

    <g id="icons"><g class="cls-1"><path class="cls-2" d="M12,11.43c-2-.45-3.83-.85-2.94-2.54C11.79,3.75,9.79,1,6.92,1S2,3.85,4.77,8.89c.92,1.69-1,2.1-2.94,2.54C.11,11.83,0,12.67,0,14.12v.72H13.83v-.72C13.84,12.67,13.72,11.83,12,11.43Zm2.26-3.94V5.76H12.54V7.49H10.81V9.22h1.73V11h1.73V9.22H16V7.49Z"/></g><path class="cls-3" d="M12,10.43C10,10,8.18,9.58,9.07,7.89,11.79,2.75,9.79,0,6.92,0S2,2.85,4.77,7.89c.92,1.69-1,2.1-2.94,2.54C.11,10.83,0,11.67,0,13.12v.72H13.83v-.72C13.84,11.67,13.72,10.83,12,10.43Zm2.26-3.94V4.76H12.54V6.49H10.81V8.22h1.73V10h1.73V8.22H16V6.49Z"/></g>

I need somehow transform it with beauty indentations inserted between each tag (like in original DOM tree).

So, at the end of the process I expect to get next:

<g id="icons">
<g class="cls-1">
    <path class="cls-2" d="M12,11.43c-2-.45-3.83-.85-2.94-2.54C11.79,3.75,9.79,1,6.92,1S2,3.85,4.77,8.89c.92,1.69-1,2.1-2.94,2.54C.11,11.83,0,12.67,0,14.12v.72H13.83v-.72C13.84,12.67,13.72,11.83,12,11.43Zm2.26-3.94V5.76H12.54V7.49H10.81V9.22h1.73V11h1.73V9.22H16V7.49Z"
    />
</g>
<path class="cls-3" d="M12,10.43C10,10,8.18,9.58,9.07,7.89,11.79,2.75,9.79,0,6.92,0S2,2.85,4.77,7.89c.92,1.69-1,2.1-2.94,2.54C.11,10.83,0,11.67,0,13.12v.72H13.83v-.72C13.84,11.67,13.72,10.83,12,10.43Zm2.26-3.94V4.76H12.54V6.49H10.81V8.22h1.73V10h1.73V8.22H16V6.49Z"
/>

Any ideas about how to make it real or maybe someone knows npm lib for such task?

Thanks!

Answer 1

Use below snippet:

It's explained in the following SO Question: SO

 var str = ' <g id="icons"><g class="cls-1"><path class="cls-2" d="M12,11.43c-2-.45-3.83-.85-2.94-2.54C11.79,3.75,9.79,1,6.92,1S2,3.85,4.77,8.89c.92,1.69-1,2.1-2.94,2.54C.11,11.83,0,12.67,0,14.12v.72H13.83v-.72C13.84,12.67,13.72,11.83,12,11.43Zm2.26-3.94V5.76H12.54V7.49H10.81V9.22h1.73V11h1.73V9.22H16V7.49Z"/></g><path class="cls-3" d="M12,10.43C10,10,8.18,9.58,9.07,7.89,11.79,2.75,9.79,0,6.92,0S2,2.85,4.77,7.89c.92,1.69-1,2.1-2.94,2.54C.11,10.83,0,11.67,0,13.12v.72H13.83v-.72C13.84,11.67,13.72,10.83,12,10.43Zm2.26-3.94V4.76H12.54V6.49H10.81V8.22h1.73V10h1.73V8.22H16V6.49Z"/></g>'; $('#out').text(process(str)); function process(str) { var div = document.createElement('div'); div.innerHTML = str.trim(); return format(div, 0).innerHTML; } function format(node, level) { var indentBefore = new Array(level++ + 1).join(' '), indentAfter = new Array(level - 1).join(' '), textNode; for (var i = 0; i < node.children.length; i++) { textNode = document.createTextNode('\\n' + indentBefore); node.insertBefore(textNode, node.children[i]); format(node.children[i], level); if (node.lastElementChild == node.children[i]) { textNode = document.createTextNode('\\n' + indentAfter); node.appendChild(textNode); } } return node; } 

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