From cee008e02bde097c60e367aae54c1e391eb81c41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=86=E5=88=A9=E7=BE=A4?= <2246026162@qq.com>
Date: Tue, 18 Oct 2022 23:38:01 +0800
Subject: [PATCH] =?UTF-8?q?=E7=AC=AC=E4=BA=8C=E6=AC=A1=E4=BD=9C=E4=B8=9A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../2022-10-13\344\275\234\344\270\232.html"  | 87 +++++++++++++++++++
 .../2022-10-14\344\275\234\344\270\232.html"  | 44 ++++++++++
 .../2022-10-13js\345\237\272\347\241\200.md"  | 42 +++++++++
 ...73\345\236\213\350\275\254\346\215\242.md" | 72 +++++++++++++++
 4 files changed, 245 insertions(+)
 create mode 100644 "\344\275\234\344\270\232/2022-10-13\344\275\234\344\270\232.html"
 create mode 100644 "\344\275\234\344\270\232/2022-10-14\344\275\234\344\270\232.html"
 create mode 100644 "\347\254\224\350\256\260/2022-10-13js\345\237\272\347\241\200.md"
 create mode 100644 "\347\254\224\350\256\260/2022-10-14\346\225\260\346\215\256\347\261\273\345\236\213\350\275\254\346\215\242.md"
diff --git "a/\344\275\234\344\270\232/2022-10-13\344\275\234\344\270\232.html" "b/\344\275\234\344\270\232/2022-10-13\344\275\234\344\270\232.html"
new file mode 100644
index 0000000..68220d6
--- /dev/null
+++ "b/\344\275\234\344\270\232/2022-10-13\344\275\234\344\270\232.html"
@@ -0,0 +1,87 @@
+<!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>Document</title>
+    <script type="text/javascript">
+        // 1.   1-100之间偶数相加，求加到几的时候和超过1000：**
+        var num =1;
+        var sum=0;
+        while(num <=100){
+            if(num % 2==0){
+                sum+=num;
+                if (sum>1000) {
+                    alert('加到'+num+'时和超过一千')
+                    break;
+                }
+                num++;
+            }else{
+                num++;
+            }
+        }
+        
+        console.log(sum);
+        //
+        var sum =0;
+        for(var i=1;i<=100;i++){
+            if(i % 2==0){
+                sum+=i;
+            }
+            if(sum>1000){
+                alert(i);
+                break;
+            }
+        }
+     
+// 2.   1-100之间偶数相加，能被7整除的数字不参加累加运算，求和
+
+        var num1 =1;
+        var sum1=0;
+        while(num1 <=100){
+            if(num1 % 2==0 && num1%7!=0){
+                sum1+=num1;
+                num1++;
+            }else{
+                num1++;
+            }
+        }
+        alert(sum1)
+         
+        var summmm=0;
+        for(var i=1;i<=100;i++){
+            if(i %2 ==0 && i %7!=0){
+                summmm+=i
+            }
+        }
+        alert(summmm);
+// 3.   求1999-2022的润年
+        for(var i=1999;i<=2022;i++){
+            if (i % 400==0 || (i % 4 ==0 && i %100!=0 )) {
+                alert(i + '是闰年')
+            }
+        }
+// 4. 输入分数，如果分数在  90-100: A  80-89：B     60-79：C      小于60：D
+// 	考虑分数不合法
+        var scroe =prompt('请输入成绩')
+        if (scroe>=0 && scroe<=100) {
+            if (scroe>=90) {
+            alert('您的成绩等级为A')
+       }else if (scroe>=80 && scroe>=89 ) {
+            alert('您的成绩等级为B')
+       }else if (scroe>=60 && scroe>=79) {
+            alert('您的成绩等级为C')
+       }else if (scroe<60) {
+            alert('您的成绩等级为D')
+       }
+        }else{
+            alert('您的成绩输入有误')
+        }
+
+    </script>
+</head>
+<body>
+    
+</body>
+</html>
\ No newline at end of file
diff --git "a/\344\275\234\344\270\232/2022-10-14\344\275\234\344\270\232.html" "b/\344\275\234\344\270\232/2022-10-14\344\275\234\344\270\232.html"
new file mode 100644
index 0000000..7ad1fb5
--- /dev/null
+++ "b/\344\275\234\344\270\232/2022-10-14\344\275\234\344\270\232.html"
@@ -0,0 +1,44 @@
+<!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>Document</title>
+    <script type="text/javascript">
+        
+//1.将A5F3转成2进制
+var num=parseInt('A5F3',16)
+            var res =num.toString(2)
+            console.log(res);
+           //2.99乘法表
+            for (var i = 1; i <= 9; i++) {
+                var sum=' ';
+                for (let j = 1; j <= i; j++) {
+                  
+                  sum=sum+j+'*'+i+'='+(j*i)+'\t'
+                }
+                sum=sum+'<br>'
+                  document.write(sum)
+            }
+        //  3.输入年月，（用数组）
+        //  3.1.计算当月有多少天
+        // 3.2.计算还剩多少天
+            var a=prompt('请输入年月日');
+            var year=new Date(a).getFullYear();
+            var month=new Date(a).getMonth();
+            var day=new Date(a).getDate();
+            const arr=[];
+            if(year % 400 ==0 || (year % 4 ==0 && year%100 !=0)){
+                arr=[31,29,31,30,31,30,31,30,31,30,31,30]
+            }else{
+                arr=[31,29,31,30,31,30,31,30,31,30,31,30]
+            }
+            alert('这个月有'+arr[month-1]+'天'+'  '+'这个月还剩'+(arr[month-1]-day)+'天');
+
+    </script>
+</head>
+<body>
+    
+</body>
+</html>
\ No newline at end of file
diff --git "a/\347\254\224\350\256\260/2022-10-13js\345\237\272\347\241\200.md" "b/\347\254\224\350\256\260/2022-10-13js\345\237\272\347\241\200.md"
new file mode 100644
index 0000000..47fe8f8
--- /dev/null
+++ "b/\347\254\224\350\256\260/2022-10-13js\345\237\272\347\241\200.md"
@@ -0,0 +1,42 @@
+#####  JavaScript直接写入html输出流
+
+```
+<script type="text/javascript>
+  js代码
+</script>
+```
+
+#####  声明变量
+
+```
+1.声明一个变量
+var 变量名 = _;
+var a = 1;
+var b = "limit";
+var c ='and';
+```
+
+#####  输出
+
+```
+//1.打印在控制台
+console.log(typeof a);
+//2.打印在网页
+document.write(typeof a);
+//3弹窗输出
+alert(typeof a)
+//4. 弹窗输入
+var 变量名 = prompt('内容')
+```
+
+#####  
+
+== 只判断值是否相等，会尝试转换类型
+
+=== 判断值与类型是否一致，完全相等
+
+++c 先自增1再进入表达式
+
+c++ 在表达式之后执行自增1
+
+三元运算符 表达式 ? 结果1 : 结果2
\ No newline at end of file
diff --git "a/\347\254\224\350\256\260/2022-10-14\346\225\260\346\215\256\347\261\273\345\236\213\350\275\254\346\215\242.md" "b/\347\254\224\350\256\260/2022-10-14\346\225\260\346\215\256\347\261\273\345\236\213\350\275\254\346\215\242.md"
new file mode 100644
index 0000000..bde261f
--- /dev/null
+++ "b/\347\254\224\350\256\260/2022-10-14\346\225\260\346\215\256\347\261\273\345\236\213\350\275\254\346\215\242.md"
@@ -0,0 +1,72 @@
+
+
+**显示数据类型**
+
+```
+typeof 变量;
+```
+
+**数据类型转换**
+
+```
+//转换为数字,失败会转成NaN(非数)
+var a = null;
+var b = Number(a);
+//转换为字符串
+var c = String(a);
+//转成浮点型
+var d = parseFloat(a);
+```
+
+**X进制(radix)转换**
+
+```
+//转换为10进制
+var a = 1010;
+var b = parseInt(a,16);
+//转换为X进制
+var b = a.toString(radix);
+```
+
+**保留小数点后n位**
+
+```
+toFixed(n);
+```
+
+**判断是否是非数**
+
+```
+//isNaN()，是数字的话--》false  不是数字--》true
+console.log(isNaN(a));
+```
+
+**字符串分割**
+
+```
+var str = `JavaScript`;  
+const arr = str.split('S')  //将字符串以S分割，返回是数组
+//返回结果为'Java','cript'
+```
+
+**Math: 舍入**
+
+```
+//Math.min() 取最小值
+var minnum = Math.min(1,3,5,64,76,47,84,3)
+//ceil()向上取整
+var num1 = Math.ceil(53.1); //54
+//floor(向下取整)
+var num2 = Math.ceil(53.1); //53
+//round(四舍五入)
+var num3 = Math.ceil(53.1); //53
+```
+
+**Radom() 随机数 [0,1)**
+
+```
+//求[0,10)随机数
+Radom()*10
+//求[20,30)随机数，[0,11)+20 --> [20,31)  -->[20,30]
+console.log(parseInt(Math.random()*11)+20);
+```
\ No newline at end of file
-- 
Gitee

