React alap példa

2026-09-17 10:05:49 +02:00
parent ebfa4f46dc
commit fda0dc216c
2 changed files with 50 additions and 0 deletions
--- a/react_alap/app.js
+++ b/react_alap/app.js
@@ -0,0 +1,32 @@
+//Procedurális
+const gomb=document.createElement('button');
+gomb.textContent="JS gomb";
+gomb.onclick=function(){
+    alert("Js gomb");
+}
+
+const jsgomb=document.getElementById('jsgomb');
+jsgomb.appendChild(gomb);
+
+
+//Deklaratív
+
+const rgomb=React.createElement("button",{
+    onClick:function(){
+        alert("React gomb");
+    }
+},"React gomb");
+
+const kontener=React.createElement('div',
+    {
+        style:{
+            backgroundColor:"green",
+            width:"300px",
+            height:"200px"
+        }
+    },
+    rgomb,rgomb,rgomb,rgomb,rgomb,rgomb);
+
+
+const root=ReactDOM.createRoot(document.getElementById('reactgomb'));
+root.render(kontener);
--- a/react_alap/index.html
+++ b/react_alap/index.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="hu">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>React bevezető</title>
+    <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script>
+    <script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>
+    <script defer src="app.js"></script>
+</head>
+<body>
+    <h2>Javascript gomb</h2>
+    <div id="jsgomb"></div>
+    <h2>React gomb</h2>
+    <div id="reactgomb"></div>
+    
+</body>
+</html>