javascript - 下拉列表和本地存储问题

Question

我有一个下拉菜单有几个选项。在页面刷新时，我需要再次选择之前选择的选项。

这是我的javascript。

按下按钮会在页面加载时启动 saveQ1(id) 函数，它会启动 loadQ1() 函数

//Save answer 1 to LocalStorage
        function saveQ1(id) {
        var answer = [document.getElementById("answer1").selectedIndex].value;
        localStorage.setItem('savequestion4656290', answer);
        }

         function loadQ1() {
        //if something was already saved....
        if (localStorage.getItem('savequestion4656290')) {
        var answer = localStorage.getItem('savequestion4656290');
        } else {
        var answer = ' ';
        }

//Put Answer 1 back in to box
        //I NEED SOMETHING HERE WHICH CHOOSES THE CORRECT OPTION (as remembered by local storage)       
         }

最后部分应该做什么才能使先前保存的选择显示。我什至不确定它是否正确保存。谢谢

Answer 1

如果我没看错，你需要添加一行

var answer1 = document.getElementByID("answer1");
answer1.selectedIndex = answer