insert css file with javascript code example
Example 1: append css file with javascript
var cssFile = document.createElement('link');
cssLink1.rel = 'stylesheet';
cssLink1.href = "styles.css"; // or path for file {themes('/styles/mobile.css')}
document.head.appendChild(cssFile); // append css to head element
Example 2: js add css to document
document.querySelector('head').innerHTML += '<link rel="stylesheet" href="styles.css" type="text/css"/>';