好久没更新了

2021-03-23 10:58:10 +08:00
parent eca64f86c0
commit 9bf8e8d020
123 changed files with 24337 additions and 214 deletions
--- a/js/demo/digui&bibao.html
+++ b/js/demo/digui&bibao.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>递归和杨辉三角</title>
+</head>
+<body>
+    <button onclick="ljq()">点我加一</button>
+    <p></p>
+    <script>
+       
+        function combine (m, n) {
+        if (n == 0) {          
+            return 1;
+        } else if (m == n) {    
+            return 1;
+        } else {                
+            return combine(m - 1, n) + combine(m - 1, n - 1);
+        }
+        }
+            
+        function put (len) {
+        for (let i = 0; i < len; i++) {      
+            for (let j = 0; j <= i; j++) {   
+            document.write(combine(i, j) + ' ');
+            }
+            document.write('<br/>');
+        }
+        }
+        put(5);
+
+        
+
+        function add(){
+            var count = 0;
+            function demo(){
+                count ++;
+                console.log("现在的值："+count);
+            }
+            return demo;
+        } 
+        var counter = add();
+        function ljq(){counter(); }
+
+        // 目的：从全局访问add里面的count变量
+        // 点击调用ljq -> counter-> counter=demo->demo()  -> 输出结果
+    </script>
+</body>
+</html>