the end of the statement, and by using semicolons, you can write multiple statements on one line.
6.Rules for JavaScript variable names:Variable is case sensitive (Y and Y are two different variables)Variable must start with a letter or underscore
7.Declaration of variablesIf the variable you are assigning has not been declared, the variable is declared automatically.Cases:x=5; Carname= "Volvo";The same effect as the following statements: Var x=5;
variable, use the equals sign:1 carname= "Volvo";However, you can also assign a value to a variable when you declare it:1 var carname= "Volvo";Declarations can also span multiple lines:1 var name= "Gates",2 age=56,3 job= "CEO";View CodeIn computer programs, variables that are not valued are often declared. A variable that is not declared with a value, whose value is actually undefined.Afte
1,javascript is a lightweight programming language that is a programming code that can insert HTML pages.2, start with tag.3, reference the script file with the extension. js in the external file 4, only Var can be used to declare variables, variables must start with a letter, variable names are case sensitive (Y and y are different variables), and many variables are declared in one statement. The statement starts with VAR and separates the variables with commas.To re-declare the JavaScript var
in PHP, there are two basic output methods: Echo and Print. In this tutorial, we'll use echo and print in almost every example. Therefore, this section provides you with more knowledge about these two output statements. PHP Echo and Print statementsThe difference between Echo and print:
echo-capable of outputting more than one string
Print-only one string is output and always returns 1
Tip: Echo is slightly faster than print because it does not return any values. PHP Echo Stat
Var and can be assigned at the same time when declaring. var pi=3.14; var name= "Bill Gates"; var answer= ' Yes I am! ' ; // You can also declare many variables in a statement var name= "Gates", age=56, job= "CEO"; // Declare a undefined variable var carname;9) JS data type//JS has a dynamic typevarX//x is undefinedvarx = 6;//x is a numbervarx = "Bill";//x is a string//JavaScript has only one numeric type. Numbers can be taken with decimal points or without. varx1=34.00;//use a decimal
.
[4] variables are case sensitive
[5] identifiers should adopt the small hump format, and the first should be the data type. Common identifiers are as follows:
Array a Array aItemsBoolean value B Boolean bIsCompleteFloating Point f Float fPriceFunction fn Function fnHandlerInteger I Integer iItemCountObject o Object oDIv1Regular Expression re RegExp reEmailCheckString s String sUserNameVariable v Variant vAnything
1.3 variable DeclarationDeclaration format: var variable name;
Var num; // decla
JavaScript variable, the value of the variable is not lost:After the following two statements are executed, the value of the variable carname remains "Volvo":var carname= "Volvo"; var carname;JavaScript has a dynamic typeJavaScript has a dynamic type. This means that the same variables can be used for different types:Instancevar x //x is Undefinedvar x = 6; //X is the number var x
();
In PHP, there are three types of arrays:
Numeric array-an array with a numeric ID key
Associative array-An array with the specified key, with each key associated with a value
Multidimensional arrays-An array that contains one or more arrays
PHP Numeric Array
Here are two ways to create a numeric array:
Auto-Assign ID key (ID key always starts from 0):
$cars =array ("Volvo", "BMW", "Toyota");//Manually Assign ID key: $cars [0]= "
The array function in PHP allows you to access and manipulate arrays. Supports simple arrays and multidimensional arrays. The PHP Array function is part of the PHP core. These functions can be used without installation.
Definition and usage
The array () function is used to create arrays. In PHP, there are three types of arrays: Valarray-array associative array with numeric ID key-an array with the specified key, each key associated with a value, multidimensional array-syntax for array syntax ar
Take out the key value of the associative array and use Array_keys ().1 PHP 2 $a=array("Volvo" = "XC90", "BMW" = "X5", "Toyota" and "Highlander"); 3 Print_r (Array_keys($a)); 4 ?>Output results1 Array ([0] = Volvo [1] = BMW [2] = Toyota)Take out the values of the associative array and use Array_values ().1 PHP 2 $a=array("Name" = "Bill", "age" = "all", "country" = "USA"); 3 Print_r (array_values($a)); 4 ?>O
JavaScript variable names:Variables are case sensitive (Y and Y are two different variables)The variable must start with a letter or an underscore7.Declaration of a variableIf the variable you are assigning has not been declared, the variable is automatically declared.Cases:x=5; Carname= "Volvo";The effect of these statements is the same as the following: Var x=5; var carname= "Volvo";8.Comparison operator
page.When JavaScript is inserted into an HTML page, it can be performed by all modern browsers.JavaScript is easy to learn.JavascriptData TypeA string (string), a number, a Boolean (Boolean), an array, an object (objects), null (NULL), undefined (Undefined).JavaScript has a dynamic typeJavaScript has a dynamic type. This means that the same variables can be used for different types:Example var x; X is undefinedvar x = 5; Now X is the numbervar x = "John"; Now X is a stringJavaScript stringA str
Choshun: Building a personalized brand culturethe distinctive and rich brand culture is the important characteristic that consumers differentiate similar products and form psychological identity. Only the brand culture is unique and distinctive, it is convenient for the consumers to identify and promote the brand competition. To build a strong brand competitiveness, we must make the brand unique personality. Mercedes-Benz, BMW, Rolls-Royce, Volvo, etc
for="male">Male
type="radio" name"sex" id="male"/>
for="femal">Female
type="radio" name="sex" id="female"/>
The The label element does not present any special effects to the user. However, it improves usability for the user of the mouse. This control is triggered if you tap text inside a LABEL element. That is, when the user selects the label, the browser automatically shifts the focus to the label-related form controls.The For property of the Text fields: The name value is the
Shanghai waste Yi Mechanical and Electrical Equipment Recycling Co., Ltd.: Shanghai used diesel generator set recycling, imported generator set recycling, the company long-term acquisition of second-hand equipment, waste disabled mechanical and electrical materials. Contact: Mr. Ye Tel: 021-51095947 13661585442
The company has long-term acquisition of second-hand generators, second-hand diesel generator sets: Recycling imported, domestic generators, 50mw--5000mw recycling second-hand generators
things. One of the key aspects of project team member management is to create a sense of participation, which can be explained in the words of the Volvo company's president, Pell Greenham: "I want the workers to say when they return home at night, 'The car was produced by me. '"
In the project team, we need to minimize the competition among members. On the one hand, it is because no one can truly compete and cooperate, and on the other hand, as said
Arris-22 marketing rules (22 Business Rules)
6. proprietary concepts and regulations
Two different companies cannot share the same concept with users.
When your competitors have formed a certain concept or position in the user's mind
If you want to win users with the same concept, the results will be futile.
As we mentioned earlier, Volvo Auto has "security" in users' minds"
This concept involves many other car manufacturers, including Mercedes. Benz
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