create element from string javascript code example

Example 1: create element javascript with id

var btn = document.createElement('div'); 
btn.setAttribute("id", "div1");

Example 2: js make node with string

function htmlToElement(html) {
    var template = document.createElement('template');
    html = html.trim(); // Never return a text node of whitespace as the result
    template.innerHTML = html;
    return template.content.firstChild;
}