Preg_match_all for JavaScript

// Add to RegExp prototype
RegExp.prototype.execAll = function(string) {
	var matches = [];
	var match = null;
	while ( (match = this.exec(string)) != null ) {
		var matchArray = [];
		for (var i in match) {
			if (parseInt(i) == i) {
				matchArray.push(match[i]);
			}
		}
		matches.push(matchArray);
	}
	return matches;
}

// Example
var someTxt = 'abc123 def456 ghi890';
var results = /[a-z]+(d+)/g.execAll(someTxt);
console.log(results);

// Output
[["abc123", "123"],
 ["def456", "456"],
 ["ghi890", "890"]]