JavaScript notes (2)

Some basic concepts

1. Json-javascript Object Representation method (JavaScript object Notation)

2. bom-Browser object Model (Browser)

3. dom-Document Object Model

4, REGEXP (mainly for regular expressions)

Need to be familiar with understanding

　　

1. JavaScript apps can save the value of a form element in a variable and then access the value through a variable without having to get it from the form element each time.

2. The data type of the variable is the type resolution of the data stored in the variable by the JavaScript footstep engine.

3. In an application, the same variables can hold different types of data. (Loose type or dynamic type)

4, in general, the first letter of the variable name should not be capitalized, because the initial capitalization is usually used to denote the object.

5, for the function name and variable name, usually the first letter is lowercase, and the function name in the form of a verb, it is easier to understand function by the function names function.

6, encapsulation usually refers to the wrapper data item, such as String object encapsulates the string primitive type.

JavaScript notes (2)