url에서 get 변수 가져오기 > JS

<script>

function getParameterByName(name) {
    name = name.replace(/[[]/, "\[").replace(/[]]/, "\]");
    var regex = new RegExp("[\?&]" + name + "=([^&]*)"),
        results = regex.exec(location.search);
    return results === null ? "" : decodeURIComponent(results[1].replace(/+/g, " "));
}

var uid = getParameterByName(userid);
var age = getParameterByName(age);

alert(age);

</script>