This article mainly introduces reference types such as Object and Function in JavaScript BASICS (3). For more information, see
Reading directory
Object Type
1. Create a constructor2. Create an object using literal notation
Array type
Array can also be created in two ways:If we want to print all values in the array, print the variable name of the array directly:Add a value to the array:Stack method and queu
This article mainly introduces the usage of javascript reference assignment (address-based value transfer). it uses a simple example to analyze the principle and usage of javacript reference assignment, which has some reference value, for more information, see the example in this article. Share it with you for your
This article mainly introduces the usage of javascript Reference Assignment (address-based value transfer). It uses a simple example to analyze the principle and usage of javacript Reference Assignment, which has some reference value, for more information, see the example in this article. Share it with you for your
This article mainly introduces the grouping matching and reverse reference of JavaScript Regular Expressions. For more information, see
Syntax
Metacharacters (pattern): used for group matching repeatedly
Attribute $1 ~ $9 if it exists, it is used to obtain the matched substring in the corresponding group.
\ 1 or $1 is used to match the content in the first group.
\ 2 or $2 is used to match the content in t
Reference Type of the JavaScript getting started tutorial and javascript getting started tutorial
Reference Type
A reference type is a data structure used to organize data and functions together. It is also often called a class, but this name is not appropriate. Although ECM
[Javascript advanced programming] excerpt 2 Chapter 5 reference type, Chapter 5 javascriptChapter 5 reference types
1. There are two ways to create an Object:
The first is to use the new operator: varperson = new Object ();
The second method is to use the literal representation of the object: var person = {name: 'test'}; (note that the last attribute is not follo
This article mainly introduces the methods of javascript original values and object references. The example analyzes the functions, definitions, and related skills of javascript original values and object references, you can refer to the examples in this article to describe the original javascript values and object reference
Javascript reference object method code reference method on the same page:
1. Use id:
Link1.href
2. Use name:
Document. all. link1.href
3. Use sourseIndex:
Document. all (4). href // note that there are HTML, HEAD, TITLE, and BODY in front, so it is 4
4. Use a link set:
Document. anchors (0 ). href // all sets include all, anchors, applets, areas, attribu
This article mainly introduces the reference and transfer of JavaScript Object parameters. If you are interested, you can refer to a problem encountered today and how to change the parameters to the external function, such:
《script》 var myname = "wood"; A(myname); document.write(myname); function A(n) { n = "Yao"; }《script》
The output result is still wood, indicating that after myname is passed i
Reference: Implementation of Javascript sequential execution in several articles about pause in Javascript:
Http://www.cnlei.org/blog/article.asp? Id = 297 href = "http://www.cnlei.org/blog/article.asp? Id = 297 "target = _ blank> http://www.cnlei.org/blog/article.asp? Id = 297
JavaScript series-synchronous or asyn
The ECMAScript variable may contain values for two different data types: the base type value and the reference type value.Primitive type values refer to simple data segments that are stored in the stack's memory, meaning that this value is completely stored in a single location in memory.The reference type value refers to the object that is stored in the heap memory, meaning that the variable is actually a
the entire pattern. The remainder is the capturing group string that matches the string for the entire pattern (if not, there is only one item) PS: for exec () and test (), if the regular expression has G mode, the next time the expression is called again, the match is started from the last match, and if the G mode is not used, Call the regular expression again and match from the beginning.inherited methods: (Tolocalstring (), toString (), ValueOf ())The first two returns the literal of the reg
Summary of common operation methods for various reference types in JavaScript, and summary of javascript
Object Type
Array typeRe-sorting method: compareAscending Order:
function compare(value1, value2){ if (value1
Descending order:
function compare(value1, value2){ if (value1
Slice:Slice (start, end); slice () method returns all items starting from the specifi
----------If this value is Boolean
' String '----------if this value is string strings
' Number '----------if this value is a numeric type #
"Object"----------if this value is an object or null
"Function"----------if this value is a function
But strictly speaking, a function is an object in ECMAScript, and each function is an instance of this class of functions, and since the function is an object, then it is a reference type, so a function is on
ArticleDirectory
1. Embrace Javascript
Ii. Value Type and reference type topic
Iii. Javascript value types and reference types
4. How to understand the value type and reference type and Examples
1. Embrace Javascript
This article mainly introduces the basic types of JavaScript and the detailed description of the reference types, and explains such content as type judgment, type conversion, and type replication. If you need it, you can refer to the following section for JavaScript types, it can be simply summarized as: Compared with a strong type language, it is a weak (loose)
Because of the use of ExtJS as a front-end framework in recent projects, it is not necessary to use JavaScript, so I recently studied JavaScript on my own to facilitate the development of the smooth. But in real-world development, I found that JavaScript is a very simple language to get started with, but when it's really used, we'll find that he is a weak type of
JavaScript does not have pointers, and references in JavaScript work differently from most popular programming languages we usually see. In JavaScript, it is impossible to reference one variable to another. In addition, only compound values (such as objects or arrays) can be assigned values through
For JavaScript types, it is simple to generalize that it is a weakly (loosely) typed language relative to a strongly typed language; There are basic types and reference types, and they are the difference between a fixed space that exists in stack memory, A no fixed space is saved in the heap memory and a pointer to the implementation location is saved in the stack memory.
There are many books on the market
The following is an example of the embodiment, usage, and precautions of these two types in JavaScript.
1. Embrace JavaScript
Once well-known JavaScript has doubled its value with the popularity of AJAX. Now JavaScript is no longer just a dispensable auxiliary tool in WEB development, but it even has its own position a
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