(function(e,s){e.src=s;e.onload=function(){jQuery.noConflict();console.log('jQuery injected')};document.head.appendChild(e);})(document.createElement('script'),'//code.jquery.com/jquery-latest.min.js') code example

Example: can we import jquery library from developer tools

var script = document.createElement('script');script.src = "https://code.jquery.com/jquery-3.4.1.min.js";document.getElementsByTagName('head')[0].appendChild(script);