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fengchuanyu 10 months ago
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9 changed files with 234 additions and 0 deletions
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  1. 5 0
      3_js基础/综合练习1选择判断部分.html
  2. 30 0
      3_js基础/综合练习2编程题1.html
  3. 29 0
      3_js基础/综合练习2编程题2.html
  4. 20 0
      3_js基础/综合练习2编程题3.html
  5. 26 0
      3_js基础/综合练习2编程题4.html
  6. 21 0
      3_js基础/综合练习2编程题5.html
  7. 25 0
      3_js基础/综合练习2编程题6.html
  8. 18 0
      3_js基础/综合练习2编程题7.html
  9. 60 0
      3_js基础/综合练习2选择判断部分.html

+ 5 - 0
3_js基础/综合练习1选择判断部分.html
View File 

@@ -6,6 +6,8 @@
 
     <title>Document</title>
 
 </head>
 
 <body>
 
+    <a href="https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Operators/Operator_precedence">运算符优先级</a>
 
+    <a href="https://www.runoob.com/js/js-reserved.html">JavaScript 关键字保留子</a>
 
     <div class="box"></div>
 
     <script>
 
         var str = "hello";
 
@@ -41,6 +43,9 @@
 
         var str12 = "2";
 
         console.log(str11<str12);
 
 
+        var num = 1;
 
+        num *= 10;
 
+
 
 
     </script>
 
 </body>

+ 30 - 0
3_js基础/综合练习2编程题1.html
View File 

@@ -0,0 +1,30 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <script>
 
+       var age = parseInt(window.prompt("请输入年龄"));
 
+
 
+        function ageFun(_age) {
 
+            if(_age<14){
 
+                return "儿童"
 
+            }else if(_age>=14&&_age<24){
 
+                return "青少年"
 
+            }else if(_age<40 && _age>=24){
 
+                return "青年"
 
+            }else if(_age>=40 && _age<60){
 
+                return "中年"
 
+            }else{
 
+                return "老年"
 
+            }
 
+        }
 
+
 
+        console.log(ageFun(age));
 
+
 
+    </script>
 
+</body>
 
+</html>

+ 29 - 0
3_js基础/综合练习2编程题2.html
View File 

@@ -0,0 +1,29 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <script>
 
+        var dayNum = parseInt(window.prompt("输入一个0～6的数字"))
 
+        
+        function weekNum(_day){
 
+            switch(_day){
 
+                case 0:return "星期一";break;
 
+                case 1:return "星期二";break;
 
+                case 2:return "星期三";break;
 
+                case 3:return "星期四";break;
 
+                case 4:return "星期五";break;
 
+                case 5:return "星期六";break;
 
+                case 6:return "星期日";break;
 
+            }
 
+        }
 
+
 
+        console.log(weekNum(dayNum));
 
+
 
+    
+    </script>
 
+</body>
 
+</html>

+ 20 - 0
3_js基础/综合练习2编程题3.html
View File 

@@ -0,0 +1,20 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <script>
 
+        function jc(num){
 
+            var countNum = 1;
 
+            for(var i=1;i<=num;i++){
 
+                countNum *= i;
 
+            }
 
+            return countNum;
 
+        }
 
+        console.log(jc(10));
 
+    </script>
 
+</body>
 
+</html>

+ 26 - 0
3_js基础/综合练习2编程题4.html
View File 

@@ -0,0 +1,26 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <script>
 
+        // 计算任意数字的阶层
 
+        function jc(num){
 
+            var countNum = 1;
 
+            for(var i=1;i<=num;i++){
 
+                countNum *= i;
 
+            }
 
+            return countNum;
 
+        }
 
+
 
+        var resNum = 0;
 
+        for(var j = 1;j<=10;j++){
 
+            resNum += jc(j);
 
+        }
 
+        console.log(resNum);
 
+    </script>
 
+</body>
 
+</html>

+ 21 - 0
3_js基础/综合练习2编程题5.html
View File 

@@ -0,0 +1,21 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <script>
 
+        // 外层循环控制输出的行数
 
+        for(var i=0;i<5;i++){
 
+            //内层循环控制每一行的内容
 
+            for(var j=0;j<i+1;j++){
 
+                document.write(j+1);
 
+                document.write("&nbsp");
 
+            }
 
+            document.write("<br>")
 
+        }
 
+    </script>
 
+</body>
 
+</html>

+ 25 - 0
3_js基础/综合练习2编程题6.html
View File 

@@ -0,0 +1,25 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <script>
 
+        // 控制行数
 
+        for(var i=0;i<5;i++){
 
+            // 控制每一行空格的个数
 
+            for(var k=6;k>i;k--){
 
+                document.write("&nbsp;");
 
+            }
 
+            // 控制每一行*的个数
 
+            for(var j=0;j<i+1;j++){
 
+                document.write("*");
 
+                document.write("&nbsp;")
 
+            }
 
+            document.write("<br>")
 
+        }
 
+    </script>
 
+</body>
 
+</html>

+ 18 - 0
3_js基础/综合练习2编程题7.html
View File 

@@ -0,0 +1,18 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+    <script>
 
+        for(var i=100;i<1000;i++){
 
+            if(i%4==2 && i%7==3 && i%9==5){
 
+                document.write(i);
 
+                document.write("&nbsp;")
 
+            }
 
+        }
 
+    </script>
 
+</body>
 
+</html>

+ 60 - 0
3_js基础/综合练习2选择判断部分.html
View File 

@@ -0,0 +1,60 @@
 
+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
+    <title>Document</title>
 
+</head>
 
+<body>
 
+   <a href="https://www.runoob.com/html/html-entities.html">实体字符</a> 
+    你 &nbsp; 好
 
+    c&#768;
 
+    &lt; &gt;
 
+    <script>
 
+        // for(var i=1;i<1;i++){
 
+        //     console.log(i);
 
+        // }
 
+
 
+        // var i = 1;
 
+        // do{
 
+        //     console.log(i)
 
+        // }while(i<1)
 
+
 
+        // while(i<1){
 
+        //     console.log(i)
 
+        // }
 
+
 
+        // var a = 1;
 
+        // if(a = 2){
 
+        //     console.log("true")
 
+        // }
 
+        
+        // var a = 2;
 
+        // var b = 3;
 
+        // switch(a){
 
+        //     case b-1:console.log("come");break;
 
+        //     default: console.log("false");
 
+        // }
 
+
 
+        // for(var i=0,j=0;i<10;i++){
 
+        //     console.log(i)
 
+        // }
 
+        // var i=1,j=1;
 
+        // i=j=10;
 
+        // console.log(i,j)
 
+
 
+
 
+        // var i = 1;
 
+        // for(i<0;i<10;i++){
 
+        //     console.log(i)
 
+        // }
 
+
 
+        // for(var i=0;i<10;i++){
 
+        //     if(...){
 
+        //         break
 
+        //     }
 
+
 
+        // }
 
+    </script>
 
+</body>
 
+</html>