Answers for "adding src in img in javascript dom"

javascrpit add image element

function add_img() { 
	var img = document.createElement('img'); 
    img.src = 'https://media.geeksforgeeks.org/wp-content/uploads/20190529122828/bs21.png'; 
	document.getElementById('body').appendChild(img);
}

insert image using set atribute

var img = document.getElementById("example");
console.log(img.getAttribute("src")); // "images/foo.png"
console.log(img.src);                 // "http://example.com/path/images/foo.png"