From 34d299805c9fb8e98583d274106825523ff3b026 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Thu, 13 Oct 2022 15:16:08 +0000 Subject: [PATCH 01/16] =?UTF-8?q?=E6=96=B0=E5=BB=BA=2022=20=E6=9D=A8?= =?UTF-8?q?=E5=87=8C=E7=BF=94?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- "22 \346\235\250\345\207\214\347\277\224/.keep" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/.keep" diff --git "a/22 \346\235\250\345\207\214\347\277\224/.keep" "b/22 \346\235\250\345\207\214\347\277\224/.keep" new file mode 100644 index 0000000..e69de29 -- Gitee From 103d62ddec6931f1585ecf4fef38149dc2c6f0ce Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Thu, 13 Oct 2022 15:16:20 +0000 Subject: [PATCH 02/16] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20=E7=AC=AC=E4=B8=80?= =?UTF-8?q?=E6=AC=A1=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../.keep" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/.keep" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/.keep" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/.keep" new file mode 100644 index 0000000..e69de29 -- Gitee From 03265fd4335a586b1df9be73459a35effddc7d18 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:06:57 +0000 Subject: [PATCH 03/16] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20=E7=AC=94=E8=AE=B0?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../\347\254\224\350\256\260/.keep" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/.keep" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/.keep" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/.keep" new file mode 100644 index 0000000..e69de29 -- Gitee From 8362294b913a780b06c68b27ab44a78d286d339d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:07:10 +0000 Subject: [PATCH 04/16] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../\344\275\234\344\270\232/.keep" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/.keep" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/.keep" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/.keep" new file mode 100644 index 0000000..e69de29 -- Gitee From 4192e5e71ef1e5148343f6b5438348b68ea0fbab Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:07:52 +0000 Subject: [PATCH 05/16] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20=E7=AC=AC=E4=BA=8C?= =?UTF-8?q?=E6=AC=A1=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../.keep" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/.keep" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/.keep" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/.keep" new file mode 100644 index 0000000..e69de29 -- Gitee From b95ffd78f7a2b787bd26a3e4fa59b6b9da991594 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:08:02 +0000 Subject: [PATCH 06/16] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20=E7=AC=94=E8=AE=B0?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../\347\254\224\350\256\260/.keep" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/.keep" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/.keep" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/.keep" new file mode 100644 index 0000000..e69de29 -- Gitee From 07512c342ccc14e8556088f89e206fb5a2ccc9bc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:08:14 +0000 Subject: [PATCH 07/16] =?UTF-8?q?=E6=96=B0=E5=BB=BA=20=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../\344\275\234\344\270\232/.keep" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/.keep" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/.keep" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/.keep" new file mode 100644 index 0000000..e69de29 -- Gitee From 78b78d7a3c84cdf95ec5966a0b86fe13fbd9dcca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:09:06 +0000 Subject: [PATCH 08/16] =?UTF-8?q?add=2022=20=E6=9D=A8=E5=87=8C=E7=BF=94/?= =?UTF-8?q?=E7=AC=AC=E4=BA=8C=E6=AC=A1=E4=BD=9C=E4=B8=9A/=E7=AC=94?= =?UTF-8?q?=E8=AE=B0/2022-10-14-.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- ...022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" | 0 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" new file mode 100644 index 0000000..e69de29 -- Gitee From 1ffb4b4172676d111c00b42f24d5cc7a0c1670a4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:09:20 +0000 Subject: [PATCH 09/16] =?UTF-8?q?update=2022=20=E6=9D=A8=E5=87=8C=E7=BF=94?= =?UTF-8?q?/=E7=AC=AC=E4=BA=8C=E6=AC=A1=E4=BD=9C=E4=B8=9A/=E7=AC=94?= =?UTF-8?q?=E8=AE=B0/2022-10-14-=E6=95=B0=E6=8D=AE=E7=B1=BB=E5=9E=8B.md.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- ...60\346\215\256\347\261\273\345\236\213.md" | 96 +++++++++++++++++++ 1 file changed, 96 insertions(+) diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" index e69de29..541c337 100644 --- "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" +++ "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" @@ -0,0 +1,96 @@ +## 基本数据类型 + +#### 基本数据类型 + +##### Number - Integer,float + +##### Boolean + +##### Null + +##### Undefined + +##### Symbol + +##### String + +​ 1.**字符串转义** + +```js +\n:换行 +\t:Tab键 +\\:斜杠 +\':单引号 +\":双引号 +``` + +​ **2.字符串下标** + +![](https://gitee.com/snailclass/tuchuang/raw/master/img/string_indexes-2022-10-709:26:49.png) + +​ 第一个元素: string[0] 最后一个元素: string[string.length-1] + + + +​ **3.String常用方法** + +```javascript +let js = 'JavaScript' +//1)获取字符串的长度: js.length + +//2)将英文字母全转为大写: js.toUpperCase() +//2.1)将英文字母全转为小写: js.toLowerCase() + +//3)截取字符串:substr(startIndex,counts) startIndex:起始索引位置 counts:截取字符串的个数 +//3.1)截取字符串:substring(startIndex,endIndex) startIndex:起始索引位置 endIndex:截止索引位置(不包含) + +//4)拆分字符串: split() +var string = 'life is now'; + +//5)去除开头或者结尾的空格: trim() + +//6)查看是否字符串中是否包含includes() indexof() +``` + +## 数据类型转换 + +#### 1.显示类型转换 + +- #### Number(mix) + +- #### parseInt(str, radix) + +- #### parseFloat(string) + +- #### String(mix) + +- #### toString(radix) + +- #### Boolean() + +**练习：将10110110转成16进制** + + + +#### 2.隐式类型转换 + +- isNaN() --> Number() +- ++/-- +/-(一元正负) +- + +- -*/% +- && || ! ：()&&() --Boolean +- < > >= <= +- == != + +## 常用类 + +#### 1.Math + +1. 求最值Math.min() Math.max() +2. 舍入 Math.ceil() Math.floor() Math.round() + +#### 2.Random + +#### 3.Time + +![](https://gitee.com/snailclass/tuchuang/raw/master/img/date_time_object-2022-10-920_27_00-2022-10-1409:19:01.png) \ No newline at end of file -- Gitee From 1ac2ef96558b9d02abc956596e6a9e849b179fdd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:10:39 +0000 Subject: [PATCH 10/16] =?UTF-8?q?update=2022=20=E6=9D=A8=E5=87=8C=E7=BF=94?= =?UTF-8?q?/=E7=AC=AC=E4=BA=8C=E6=AC=A1=E4=BD=9C=E4=B8=9A/=E7=AC=94?= =?UTF-8?q?=E8=AE=B0/2022-10-14-=E6=95=B0=E6=8D=AE=E7=B1=BB=E5=9E=8B.md.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- ...-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" | 3 --- 1 file changed, 3 deletions(-) diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" index 541c337..5f4bb5c 100644 --- "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" +++ "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" @@ -26,7 +26,6 @@ ​ **2.字符串下标** -![](https://gitee.com/snailclass/tuchuang/raw/master/img/string_indexes-2022-10-709:26:49.png) ​ 第一个元素: string[0] 最后一个元素: string[string.length-1] @@ -68,8 +67,6 @@ var string = 'life is now'; - #### Boolean() -**练习：将10110110转成16进制** - #### 2.隐式类型转换 -- Gitee From e463a8ce8d150c6bbbe2543736b1db0daf748e5c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:15:59 +0000 Subject: [PATCH 11/16] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=96=87=E4=BB=B6=2022?= =?UTF-8?q?=20=E6=9D=A8=E5=87=8C=E7=BF=94/=E7=AC=AC=E4=BA=8C=E6=AC=A1?= =?UTF-8?q?=E4=BD=9C=E4=B8=9A/=E7=AC=94=E8=AE=B0/2022-10-14-=E6=95=B0?= =?UTF-8?q?=E6=8D=AE=E7=B1=BB=E5=9E=8B.md?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...60\346\215\256\347\261\273\345\236\213.md" | 93 ------------------- 1 file changed, 93 deletions(-) delete mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" deleted file mode 100644 index 5f4bb5c..0000000 --- "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" +++ /dev/null @@ -1,93 +0,0 @@ -## 基本数据类型 - -#### 基本数据类型 - -##### Number - Integer,float - -##### Boolean - -##### Null - -##### Undefined - -##### Symbol - -##### String - -​ 1.**字符串转义** - -```js -\n:换行 -\t:Tab键 -\\:斜杠 -\':单引号 -\":双引号 -``` - -​ **2.字符串下标** - - -​ 第一个元素: string[0] 最后一个元素: string[string.length-1] - - - -​ **3.String常用方法** - -```javascript -let js = 'JavaScript' -//1)获取字符串的长度: js.length - -//2)将英文字母全转为大写: js.toUpperCase() -//2.1)将英文字母全转为小写: js.toLowerCase() - -//3)截取字符串:substr(startIndex,counts) startIndex:起始索引位置 counts:截取字符串的个数 -//3.1)截取字符串:substring(startIndex,endIndex) startIndex:起始索引位置 endIndex:截止索引位置(不包含) - -//4)拆分字符串: split() -var string = 'life is now'; - -//5)去除开头或者结尾的空格: trim() - -//6)查看是否字符串中是否包含includes() indexof() -``` - -## 数据类型转换 - -#### 1.显示类型转换 - -- #### Number(mix) - -- #### parseInt(str, radix) - -- #### parseFloat(string) - -- #### String(mix) - -- #### toString(radix) - -- #### Boolean() - - - -#### 2.隐式类型转换 - -- isNaN() --> Number() -- ++/-- +/-(一元正负) -- + -- -*/% -- && || ! ：()&&() --Boolean -- < > >= <= -- == != - -## 常用类 - -#### 1.Math - -1. 求最值Math.min() Math.max() -2. 舍入 Math.ceil() Math.floor() Math.round() - -#### 2.Random - -#### 3.Time - -![](https://gitee.com/snailclass/tuchuang/raw/master/img/date_time_object-2022-10-920_27_00-2022-10-1409:19:01.png) \ No newline at end of file -- Gitee From 76cdea4db19486ec81d9b62117a775129a7129bc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:16:39 +0000 Subject: [PATCH 12/16] =?UTF-8?q?22=20=E6=9D=A8=E5=87=8C=E7=BF=94?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- ...60\346\215\256\347\261\273\345\236\213.md" | 102 ++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" new file mode 100644 index 0000000..24f69c8 --- /dev/null +++ "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-14-\346\225\260\346\215\256\347\261\273\345\236\213.md" @@ -0,0 +1,102 @@ +## 基本数据类型 + +#### 基本数据类型 + +- ##### Number - Integer,float + +- ##### Boolean + +- ##### Null + +- ##### Undefined + +- ##### Symbol + +- ##### String + +#### 1.**字符串转义** + +```js +\n:换行 +\t:Tab键 +\\:斜杠 +\':单引号 +\":双引号 +``` + +#### 2.字符串下标 + +1. 第一个元素: string[0] +2. 最后一个元素: string[string.length-1] + +#### 3.String常用方法 + +```javascript +let js = 'JavaScript' +//1)获取字符串的长度: js.length + +//2)将英文字母全转为大写: js.toUpperCase() +//2.1)将英文字母全转为小写: js.toLowerCase() + +//3)截取字符串:substr(startIndex,counts) startIndex:起始索引位置 counts:截取字符串的个数 +//3.1)截取字符串:substring(startIndex,endIndex) startIndex:起始索引位置 endIndex:截止索引位置(不包含) + +//4)拆分字符串: split() +var string = 'life is now'; + +//5)去除开头或者结尾的空格: trim() + +//6)查看是否字符串中是否包含includes() indexof() +``` + +## 数据类型转换 + +#### 1.显示类型转换 + +- #### Number(mix) + +- #### parseInt(str, radix) + +- #### parseFloat(string) + +- #### String(mix) + +- #### toString(radix) + +- #### Boolean() + + + +#### 2.隐式类型转换 + +- isNaN() --> Number() +- ++/-- +/-(一元正负) +- + +- -*/% +- && || ! ：()&&() --Boolean +- < > >= <= +- == != + +## 常用类 + +#### 1.Math 数学函数 + +1. 求最值 + + 最小值 Math.min() + + 最大值 Math.max() + +2. 舍入 + + Math.ceil() 向上取整 + + Math.floor() 向下取整 + + Math.round() 四舍五入 + +#### 2.Random 随机数 + +#### 3.Time 时间函数 + +![](https://gitee.com/snailclass/tuchuang/raw/master/img/date_time_object-2022-10-920_27_00-2022-10-1409:19:01.png) -- Gitee From a06fd02507a33004ea0036bd2f048d54c6f9cabe Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Fri, 14 Oct 2022 09:18:51 +0000 Subject: [PATCH 13/16] =?UTF-8?q?=E5=8D=8A=E6=88=90=E5=93=81?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- .../\344\275\234\344\270\232/emo.html" | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" new file mode 100644 index 0000000..23efd23 --- /dev/null +++ "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" @@ -0,0 +1,44 @@ + + + + + + + + zuoye + + + + + + + + + \ No newline at end of file -- Gitee From 8af2109f7ed7f66c198690d23e4e76d2518e4d69 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Sun, 16 Oct 2022 12:50:11 +0000 Subject: [PATCH 14/16] =?UTF-8?q?add=2022=20=E6=9D=A8=E5=87=8C=E7=BF=94/?= =?UTF-8?q?=E7=AC=AC=E4=B8=80=E6=AC=A1=E4=BD=9C=E4=B8=9A/=E4=BD=9C?= =?UTF-8?q?=E4=B8=9A/test.html.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- .../\344\275\234\344\270\232/test.html" | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/test.html" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/test.html" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/test.html" new file mode 100644 index 0000000..cbc6e6e --- /dev/null +++ "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/test.html" @@ -0,0 +1,71 @@ + + + + + + + Document + + + + + \ No newline at end of file -- Gitee From 51a632c2debce9cf94ce047f0e7b4b7c2ec48bdc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Sun, 16 Oct 2022 12:52:07 +0000 Subject: [PATCH 15/16] =?UTF-8?q?add=2022=20=E6=9D=A8=E5=87=8C=E7=BF=94/?= =?UTF-8?q?=E7=AC=AC=E4=B8=80=E6=AC=A1=E4=BD=9C=E4=B8=9A/=E7=AC=94?= =?UTF-8?q?=E8=AE=B0/2022-10-13-.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- .../2022-10-13-html.md" | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 "22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-13-html.md" diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-13-html.md" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-13-html.md" new file mode 100644 index 0000000..c91ffca --- /dev/null +++ "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\347\254\224\350\256\260/2022-10-13-html.md" @@ -0,0 +1,54 @@ +HTML 中的 Javascript 脚本代码必须位于 标签之间。 + +Javascript 脚本代码可被放置在 HTML 页面的 和 部分中。 + + 会告诉 JavaScript 在何处开始和结束。 + + 之间的代码行包含了 JavaScript: + + + +浏览器支持调试，你可以使用 console.log() 方法在浏览器中显示 JavaScript 值。 + + +avaScript 使用关键字 var 来定义变量， 使用等号来为变量赋值： + +var x, length + +x = 5 + +length = 6 + + + + +var length = 16; // Number 通过数字字面量赋值 +var points = x * 10; // Number 通过表达式字面量赋值 +var lastName = "Johnson"; // String 通过字符串字面量赋值 +var cars = ["Saab", "Volvo", "BMW"]; // Array 通过数组字面量赋值 +var person = {firstName:"John", lastName:"Doe"}; // Object 通过对象字面量赋值 + + + + + +break 用于跳出循环。 +catch 语句块，在 try 语句块执行出错时执行 catch 语句块。 +continue 跳过循环中的一个迭代。 +do ... while 执行一个语句块，在条件语句为 true 时继续执行该语句块。 +for 在条件语句为 true 时，可以将代码块执行指定的次数。 +for ... in 用于遍历数组或者对象的属性（对数组或者对象的属性进行循环操作）。 +function 定义一个函数 +if ... else 用于基于不同的条件来执行不同的动作。 +return 退出函数 +switch 用于基于不同的条件来执行不同的动作。 +throw 抛出（生成）错误 。 +try 实现错误处理，与 catch 一同使用。 +var 声明一个变量。 +while 当条件语句为 true 时，执行语句块。 + + +单行注释以 // 开头。 多行注释以 /* 开始，以 */ 结尾。 \ No newline at end of file -- Gitee From 843dcdfca741a33698d9b089172a42372961eff4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=A8=E5=87=8C=E7=BF=94?= <963304364@qq.com> Date: Sun, 16 Oct 2022 12:55:52 +0000 Subject: [PATCH 16/16] =?UTF-8?q?update=2022=20=E6=9D=A8=E5=87=8C=E7=BF=94?= =?UTF-8?q?/=E7=AC=AC=E4=BA=8C=E6=AC=A1=E4=BD=9C=E4=B8=9A/=E4=BD=9C?= =?UTF-8?q?=E4=B8=9A/emo.html.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 杨凌翔 <963304364@qq.com> --- .../\344\275\234\344\270\232/emo.html" | 109 ++++++++++++------ 1 file changed, 75 insertions(+), 34 deletions(-) diff --git "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" index 23efd23..0223272 100644 --- "a/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" +++ "b/22 \346\235\250\345\207\214\347\277\224/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\344\275\234\344\270\232/emo.html" @@ -1,44 +1,85 @@ - - - - - - zuoye - - - - + + + + + Document + + - - - + \ No newline at end of file -- Gitee