优化

client/public/shared/dom.js

@@ -0,0 +1,18 @@
+export function textValue(value, fallback = '') {
+    return value == null || value === '' ? fallback : String(value);
+}
+
+export function createTextElement(tagName, className, value, fallback = '') {
+    const element = document.createElement(tagName);
+    if (className) {
+        element.className = className;
+    }
+    element.textContent = textValue(value, fallback);
+    return element;
+}
+
+export function createIconElement(className) {
+    const icon = document.createElement('i');
+    icon.className = className;
+    return icon;
+}