The properties of an object in ES5 can be divided into ' data properties ' and ' accessor properties '. Data properties are typically used to store data values, and accessor properties correspond to set/get operations, which cannot be stored directly in the data value. Data Attribute properties: Value, writable, enumerable, configurable. Explanation: Configurable:true/false, whether the property can be modified by the delete, can modify the properties of the property, can be modified to the accessor property, the default False;enumerable:true/false, whether the for In the loop return, the default false;writable:true/false, whether the value of the property can be modified, the default false;value:undefined, the value of the Set property, the default undefined. Accessor property attributes: Set, get, enumerable, configurable. Explanation: Configurable:true/false, is it possible to pass the DE
1. A detailed description of the stored data
Summary: The properties of an object in ES5 can be divided into ' data properties & #39; and ' accessor Properties & #39; Data properties are typically used to store data values, and accessor properties correspond to set/get operations, which cannot be stored directly in the data value. Data Attribute properties: Value, writable, enumerable, configurable. Explanation: Configurable:true/false, whether you can delete properties through Delete, can modify properties of attributes, can modify properties to accessor properties, default FA ...
2. A detailed description of the data attributes
Summary: The properties of an object in ES5 can be divided into ' data properties & #39; and ' accessor Properties & #39; Data properties are typically used to store data values, and accessor properties correspond to set/get operations, which cannot be stored directly in the data value. Data Attribute properties: Value, writable, enumerable, configurable. Explanation: Configurable:true/false, whether you can delete properties through Delete, can modify properties of attributes, can modify properties to accessor properties, default FA ...
3. Share ASP FSO Delete file DeleteFile and folder DeleteFolder instance code
Introduction: ASP FSO Tutorial: The ASP Delete method deletes a method that deletes a specified file or folder. This article asks you to share ASP fso Delete file DeleteFile and folder DeleteFolder instance code
4. Summarize the ASP FSO Tutorial--asp Delete method
Introduction: I come to summarize an ASP FSO tutorial--asp Delete method, which has two instances, simple and practical, want to see a friend can pay attention to
5. MySQL Delete trigger (delete) usage detailed
Summary: A trigger (trigger) is a method that SQL Server provides to programmers and data analysts to ensure data integrity, which is a special stored procedure associated with a table event, which is executed either by the program or manually, but by events, such as when a table is manipulated ( Insert,delete, update) will be activated when it executes. Triggers are often used to enforce data integrity constraints, business rules, and so on. Triggers can be found in the dba_triggers, user_triggers data dictionary. The SQL3 trigger is a statement that can be automatically executed by the system to modify the database.
6. What does MySQL metadata mean? Introduction to metadata and example code
Summary: MySQL metadata you may want to know the following three kinds of information about MySQL: Query result information: The number of records affected by the Select,update or DELETE statement. Database and data table information: Contains the structure information of the database and the data table. ...
7. mysql Trigger creation Trigger
Introduction: Triggers play a very important role in database system development, such as preventing harmful data from being entered into a database, altering or canceling the execution of INSERT, UPDATE, and DELETE statements, and listening for changes in the data in a database during a session.
8. In-depth analysis of pre-parsing and side-effects in Javascriptvar
Summary: The side effects of var implicit global variables and well-defined global variables have a small difference between the ability to make a variable undefined by using the delete operator. Global variables created by VAR (created in programs other than functions) cannot be deleted. Implicit global variables created without VAR (regardless of whether they were created in a function) can be deleted. This shows that, technically, implicit global variables are not real global changes.
9. Document Affairs Management Transactional example of File Manager
Introduction: Recommend a file things management transactional file Managerproject descriptiontransactional File Manager is a. NET API, that supports Includin G file system operations such as file copy, move, delete, append, etc
The difference between on () and click () in jquery
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