请对代码进行优化，要求优先显示document.getElementById("nailDensity").name = density;设置的值 <select class="layui-btn layui-btn-sm" id="nailDensity" onchange="setLocalStorageDensity(value)" name=""> <option value="" selected>请选择钉码浓度</option> <option value="0">钉码浓度0</option> <option value="7">钉码浓度7</option> <option value="15">钉码浓度15</option> </select> <script> function setLocalStorageDensity(density) { // 设置本地存储数据 localStorage.setItem("yxgj_printer_density", density); // 更新select标签的name属性 document.getElementById("nailDensity").name = density; } function getLocalStorageDensity() { // 获取本地存储数据 density = localStorage.getItem("yxgj_printer_density"); // 更新select标签的name属性 document.getElementById("nailDensity").name = density; } // 页面加载时调用getLocalStorageDensity函数 getLocalStorageDensity(); </script>

可以将更新select标签name属性的代码放到设置本地存储数据的函数中，这样在设置本地存储数据时就能够同时更新select标签的name属性，避免在获取本地存储数据时才更新select标签的name属性，从而实现优先显示。代码如下：

<select class="layui-btn layui-btn-sm" id="nailDensity" onchange="setLocalStorageDensity(value)" name="">
    <option value="" selected>请选择钉码浓度</option>
    <option value="0">钉码浓度0</option>
    <option value="7">钉码浓度7</option>
    <option value="15">钉码浓度15</option>
</select>

<script>
    function setLocalStorageDensity(density) {
        // 设置本地存储数据
        localStorage.setItem("yxgj_printer_density", density);
        // 更新select标签的name属性
        document.getElementById("nailDensity").name = density;
    }

    function getLocalStorageDensity() {
        // 获取本地存储数据
        density = localStorage.getItem("yxgj_printer_density");
        if (density) {
            // 更新select标签的name属性
            document.getElementById("nailDensity").name = density;
        }
    }

    // 页面加载时调用getLocalStorageDensity函数
    getLocalStorageDensity();
</script>