Fix bugs

Web/X - API JS-DOM/index.md

@@ -243,20 +243,18 @@ for name in $ELEM.getAttributeNames():
 ```typescript
 // [TS] TypeScript
 type CreateOpts = Partial<{
-      children   : readonly Element[],
-      textContent: string,
+      content    : string|Element|readonly Element[],
       id         : string,
       classes    : readonly string[],
-      attrs      : readonly Record<string, string>,
-      dataset    : readonly Record<string, string>,
+      attrs      : readonly Record<string, string|boolean>,
+      dataset    : readonly Record<string, string|boolean>,
       cssvars    : readonly Record<string, string>,
       listeners  : readonly Record<string, (ev: Event) => void>
       parent     : Element
 }>;
 function create<T extends keyof HTMLElementTagNameMap>(tagname: T,
                       {
-                          children    = null,
-                          textContent = null,
+                          content     = [],
                           id          = null,
                           classes     = [],
                           attrs       = {},
@@ -268,22 +266,33 @@ function create<T extends keyof HTMLElementTagNameMap>(tagname: T,
 
   let elem = document.createElement(tagname) as HTMLElementTagNameMap[T];
 
-  if( children !== null )
-      elem.replaceChildren(...children);
-
-  if( textContent !== null )
-      elem.textContent = textContent;
+  if( ! Array.isArray(content) )
+    content = [content];
+  elem.replaceChildren(...content);
 
   if( id !== null )
       elem.id = id;
 
   elem.classList.add(...classes);
 
-  for(let attrname in attrs)
-      elem.setAttribute(attrname, attrs[attrname]);
-
-  for(let dataname in dataset)
-      elem.dataset[dataname] = dataset[dataname];
+  for(let name in attrs) {
+    const value = attrs[name];
+    if( typeof value === "boolean")
+      elem.toggleAttribute(name, value);
+    else
+      elem.setAttribute(name, value);
+  }
+      
+
+  for(let name in dataset) {
+      const value = dataset[name];
+      if( value === true )
+        elem.dataset[dataname] = "";
+      else if(value === false)
+        delete elem.dataset[name];
+      else
+        elem.dataset[dataname] = value;
+  }
 
   for(let cssvarname in cssvars)
       elem.style.setProperty(`--${cssvarname}`, cssvars[cssvarname])