a fonction to run some code no more than 1 time per period

runOnce.js

function runOnce(wait, cb){
	var timeOut = null
	,    launched = false;

	return function(){
		if (launched === false){
			launched = true;
			cb(arguments);
		}
		if(timeOut){
			return;
		}
		timeOut = setTimeout(function(){
			launched = false;
			timeOut = null;
		}, wait);
	};
}

/* How to use: 
var tesFunc = runOnce(3000, function (args) {
    console.debug('testFunc executed');
});

tesFunc(1);tesFunc(1);tesFunc(1);
setTimeout(function(){tesFunc(1);tesFunc(1);},5000);
*/