js 获取缓存渲染到页面里面

$('#code').change(function(){
    console.log($(this).val())
    localStorage.setItem("code",JSON.stringify({"sn":$(this).val(),"gs":$("#select").val()}));
});
$('#select').change(function(){
    console.log($(this).val())
    localStorage.setItem("code",JSON.stringify({"gs":$(this).val(),"sn":$("#code").val()}));
});
var code = localStorage.getItem("code");
if (code){
    var code= JSON.parse(code);
    $('#code').val(code.sn);
    $('#select').val(code.gs);
}