添加占位符

app/src/assets/scss/business/_custom.scss

@@ -71,6 +71,11 @@
         background-color: transparent;
       }
     }
+
+    & > [data-dtype]:empty:before {
+      color: var(--b3-empty-color);
+      content: attr(placeholder);
+    }
   }
 
   .b3-text-field--text {
@@ -78,13 +83,6 @@
     min-height: 34px;
     background-color: transparent;
     padding: 7px 8px;
-    
-    &:empty {
-      &:before {
-        color: var(--b3-empty-color);
-        content: attr(placeholder);
-      }
-    }  
 
     &:hover {
       background-color: var(--b3-theme-background);

app/src/protyle/render/av/blockAttr.ts

@@ -62,7 +62,7 @@ export const genAVValueHTML = (value: IAVCellValue) => {
             html = `<textarea style="resize: vertical" rows="${value.text.content.split("\n").length}" class="b3-text-field b3-text-field--text fn__flex-1" placeholder="${window.siyuan.languages.empty}">${value.text.content}</textarea>`;
             break;
         case "number":
-            html = `<input value="${value.number.isNotEmpty ? value.number.content : ""}" type="number" class="b3-text-field b3-text-field--text fn__flex-1">
+            html = `<input value="${value.number.isNotEmpty ? value.number.content : ""}" type="number" class="b3-text-field b3-text-field--text fn__flex-1" placeholder="${window.siyuan.languages.empty}">
 <span class="fn__space"></span><span class="fn__flex-center ft__on-surface b3-tooltips__w b3-tooltips" aria-label="${window.siyuan.languages.format}">${value.number.formattedContent}</span><span class="fn__space"></span>`;
             break;
         case "mSelect":
@@ -188,10 +188,8 @@ export const renderAVAttribute = (element: HTMLElement, id: string, protyle: IPr
         <span>${escapeHtml(item.key.name)}</span>
     </div>
     <div data-av-id="${table.avID}" data-col-id="${item.values[0].keyID}" data-block-id="${item.values[0].blockID}" data-id="${item.values[0].id}" data-type="${item.values[0].type}" 
-data-options="${item.key?.options ? escapeAttr(JSON.stringify(item.key.options)) : "[]"}"
-class="fn__flex-1 fn__flex${["url", "text", "number", "email", "phone"].includes(item.values[0].type) ? "" : ["block", "created", "updated"].includes(item.values[0].type) ? " custom-attr__avvalue--readonly" : " custom-attr__avvalue"}">
-        ${genAVValueHTML(item.values[0])}
-    </div>
+data-options="${item.key?.options ? escapeAttr(JSON.stringify(item.key.options)) : "[]"}" placeholder="${window.siyuan.languages.empty}" 
+class="fn__flex-1 fn__flex${["url", "text", "number", "email", "phone"].includes(item.values[0].type) ? "" : ["block", "created", "updated"].includes(item.values[0].type) ? " custom-attr__avvalue--readonly" : " custom-attr__avvalue"}">${genAVValueHTML(item.values[0])}</div>
 </div>`;
             });
             innerHTML += `<div class="fn__hr"></div>