xxx

project/手写虚拟dom/1.html

@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>手写虚拟dom</title>
+    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
+</head>
+<body>
+    <script type="text/babel">
+    /*@jsx createElement*/  //@jsx babeld的子执行指令
+    let vDom=(<div id="app" name="chenxuan">
+        <li name="world">hello world1!</li>
+        <li name="kitty">hello kitty2! <span>hehe</span></li>
+    </div>);
+    // let vDom=("hello world");
+
+    function createElement(nodeName,attr,...args){
+        // console.log({nodeName:nodeName,attr:attr,children:[].concat(...args)});
+        // console.log(...args);
+        return {nodeName:nodeName,attr:attr,children:[].concat(...args)}
+    }
+
+    function render(vnode){
+        // console.log(vnode)
+        // console.log(vnode.split);
+        //文本
+        if(vnode.split){
+            console.log(vnode)
+            return document.createTextNode(vnode);
+        }
+        else{
+            // console.log(vnode.children)
+            let node=document.createElement(vnode.nodeName);
+            let attr=vnode.attr || {};
+            Object.keys(attr).forEach((k)=>{
+                node.setAttribute(k,attr[k])
+            });
+
+            (vnode.children || []).forEach((n)=>{
+                node.appendChild(render(n))
+            })
+            // console.log(node);
+            return node;
+        }
+        //非文本  
+    }
+    let dom=render(vDom);
+    document.body.appendChild(dom);
+    </script>
+</body>
+</html>