[ruslan_mart]

<div class="info" data-id="1">
Info 1
</div>
<div class="info" data-id="2">
Info 2
</div>

<div>${1}</div>
<div>${1}</div>
<span>${1}</span>
<div>${2}</div>

(function(window, document) {
	'use strict';

	function replaceData(data, id) {
		var bodyData = body.innerHTML,
			pattern = new RegExp('\\$\\{' + id + '\\}', 'g');
		if(pattern.test(bodyData)) {
			body.innerHTML = bodyData.replace(pattern, data);
		}
	};

	var body = document.body,
		elements = document.getElementsByClassName('info'), i;

	for(i = 0; i < elements.length; i++) {
		replaceData(elements[i].innerHTML, elements[i].dataset.id)
	}

})(window, document);