jquery--递增--年份的选择

<select id="select_year"></select>
<script>
$(document).ready(function(){
    var head="<option value=‘‘ selected>全部</option>";
    var year="";
    var i=0;
    for(i=2005;i<=2030;i++){
    year+="<option value=‘"+i+"‘>"+i+"</option>";
    }
    var total = head+year;
    $(‘#select_year‘).append(total);
});
</script>