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Compilation of javascript basic knowledge_Basic knowledge

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WBOYOriginal
2016-05-16 18:25:481439browse

1 Create script block
Program code

Copy code The code is as follows:



2 Hide script code
Program code

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]

In browsers that do not support JavaScript The relevant code will not be executed in the browser3. When the browser does not support it, it will be displayed

Program code
Copy code
The code is as follows:




4 Link external script files
Program code
Copy code
The code is as follows:



5 Comment Script

Program Code
Copy code
The code is as follows:


// This is a comment
document. write("Hello"); // This is a comment
/*
All of this
is a comment
*/

6 output to Browser

Program code
Copy code
The code is as follows:


document. write("Hello jb51 .net");

7 Define variables

Program code
Copy code
The code is as follows:


var myVariable = "some value";


8 String addition
Program code
Copy code
The code is as follows:


var myString = "String1" "String2";


9 String search
Program code

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If you need to introduce external Js, you need to refresh to execute
]
10 string Replace
program codeCopy code
The code is as follows:

thisVar.replace ("Monday","Friday");

11 Format string
Program code
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12 创建数组
程序代码

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13 数组排序
程序代码

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14 分割字符串
程序代码

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15 弹出警告信息
程序代码

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16 弹出确认框
程序代码

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17 自定义函数
程序代码

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18 调用JS函数
程序代码
复制代码 代码如下:

19 在页面加载完成后执行函数
程序代码
复制代码 代码如下:


Body of the page


20 条件判断
程序代码

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21 specified times of loop
Program code

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