JSFiddle - React, Tailwind, and code Playground
JavaScript
function init() {
var imgDefer = document.getElementsByClassName('avatar');
for (var i = 0; i < imgDefer.length; i++) {
if (imgDefer[i].getAttribute('src') == 'http://img1.blogblog.com/img/blank.gif') {
imgDefer[i].setAttribute('src', 'http://lh5.googleusercontent.com/-OetbWX0kgoo/AAAAAAAAAAI/AAAAAAAACGU/g81EZcEvYRY/s35-c/photo.jpg');
}
}
}
window.onload = init;