without repeats

Random

var text = document.getElementById('text'); // <div id="text"></div>

var quotes = '["1", "2", "3"]'; // any array (JSON or not JSON)
quotes = JSON.parse(quotes);

text.onclick = function foo() {
		var random = parseInt(Math.random()*quotes.length);
		var quote = quotes[random];
		if(text.innerHTML == quote) {
			return foo(); // start the function again
		} 
		text.innerHTML = quote;
}